Recent Publications

    2011:

  1. A. R. Kuzmak
    Brachistochrone problem in the Schwarzschild metric
    J. Phys. Stud. 15, No. 3, 3002 (9 p.) (2011)

  2. I. O. Vakarchuk, V. S. Pastukhov
    Random phase approximation for Bose systems above the temperature of phase transition
    J. Phys. Stud. 15, No. 3, 3003 (7 p.) (2011)

  3. L. F. Blazhyevskyi, V. S. Yanishevsky
    The path integral representation kernel of evolution operator in Merton–Garman model
    Condens. Matter Phys. 14, No. 2, 23001(1-16) (2011)

  4. V. S. Pastukhov
    Dynamical Properties of a Bose Gas with δ-like Interaction between Particles at Temperatures above the Phase Transition Point and in the Limit of Strong Interparticle Repulsion
    Ukr. Phys. J. 56, No. 6, 554-563 (2011)

  5. V. M. Tkachuk
    Nonuniform Zeno effect
    J. Phys. Stud. 15, No. 1, 1001 (3 p.) (2011)

  6. A. A. Rovenchak, S. Buk
    Defining thermodynamic parameters for texts from word rank-frequency distributions
    J. Phys. Stud. 15, No. 1, 1005 (6 p.) (2011)

  7. M. I. Samar
    Modified perturbation theory for hydrogen atom in space with Lorentz-covariant deformed algebra with minimal length
    J. Phys. Stud. 15, No. 1, 1007 (7 p.) (2011)

  8. A. A. Rovenchak, S. Buk
    Application of a quantum ensemble model to linguistic analysis
    Physica A 390, No. 7, P. 1326-1331 (2011)

  9. A. A. Rovenchak
    A naïve conception of the uncertainty principle in the multiparametric attribution of texts
    Glottometrics 21, 65-72 (2011)

  10. A. A. Rovenchak, Ch. Riley, T. Sherman
    Complexity of the Vai script revisited: a frequency study of the syllabary
    Studies in Quantitative Linguistics 11: Issues in Qantitative Linguistics, Vol. 2. Ed. by E. Kelih, V. Levickij, Yu. Matskulyak (RAM-Verlag, Lüdenscheid) 117-128 (2011)

  11. J. Mačutek, A. A. Rovenchak
    Canonical word forms: Menzerath–Altmann law, phonemic length and syllabic length
    Studies in Quantitative Linguistics 11: Issues in Qantitative Linguistics, Vol. 2. Ed. by E. Kelih, V. Levickij, Yu. Matskulyak (RAM-Verlag, Lüdenscheid) 136-147 (2011)

  12. A. A. Rovenchak
    Phoneme distribution, syllabic structure, and tonal patterns in Nko texts
    Mandenkan: Bulletin semestriel d'études linguistiques mandé 47, 77-96 (2011)

    13. 2010:

  13. A. A. Rovenchak
    Partition function formalism in the problem of multidimensional integer partitions
    Computational Methods in Science and Technology (Poznań) 16, No. 2, P. 187-190 (2010)

  14. M. M. Stetsko
    A note on scattering in deformed space with minimal length
    Computational Methods in Science and Technology (Poznań) 16, No. 2, P. 195-199 (2010)

  15. A. A. Rovenchak
    Harmonically trapped bosons on the Sierpiński carpet
    Acta Physica Polonica A 118, No. 4, P. 531-533 (2010)

  16. M. I. Samar, V. M. Tkachuk
    Perturbation hydrogen-atom spectrum in a space with the Lorentz-covariant deformed algebra with minimal length
    J. Phys. Stud. 14, No. 1, 1001 (5 p.) (2010)

  17. I. O. Vakarchuk
    Deformed Heisenberg algebra in the theory of liquid 4He
    Ukr. J. Phys. 55, No. 1, 36-43 (2010)

  18. C. Quesne, V. M. Tkachuk
    Composite system in deformed space with minimal length
    Phys. Rev. A 81, No. 1, 012106 (8 p.) (2010)

  19. M. A. Mohammad, T. Fito, J. Chen, M. Aktary, M. Stepanova, S. K. Dew
    Interdependence of optimum exposure dose regimes and the kinetics of resist dissolution for electron beam nanolithography of polymethylmethacrylate
    Journal of Vacuum Science & Technology B 28, Issue 1, L1-L4 (2010)

  20. M. A. Mohammad, T. Fito, J. Chen, S. Buswell, M. Aktary, M. Stepanova, S. K. Dew
    Systematic study of the interdependence of exposure and development conditions and kinetic modelling for optimizing low-energy electron beam nanolithography
    Microelectronic Engineering 87, Issue 5-8, 1104-1107 (2010)

  21. M. A. Mohammad, T. Fito, J. Chen, S. Buswell, M. Aktary M., S. K. Dew, M. Stepanova
    The Interdependence of Exposure and Development Conditions when Optimizing Low-Energy EBL for Nano-Scale Resolution
    in: Lithography. Ed. by Michael Wang (Intech, Vukovar, Croatia) 293-318 (2010)

  22. Yu. S. Krynytskyi, A. A. Rovenchak
    Development of the complex number concept: from Descartes to Riemann
    Svit Fizyky (World of Physics) ¹ 1, 3-9 (2010) (in Ukrainian)

  23. S. Buk, A. A. Rovenchak
    Online-concordance of "Perekhresni stezhky" ("The Cross-Paths"), a novel by Ivan Franko
    Ivan Franko: Spirit, Science, Thought, Will: Proceedings of the International Scientific Congress dedicated to the 150th anniversary (Lviv, 27 September – 1 October 2006) (Lviv University Press) 2, 203-211 (2010)

    24. 2009:

  24. A. A. Rovenchak, Yu. S. Krynytskyi
    History of complex numbers origins
    Svit Fizyky (World of Physics) ¹ 3, 3-9 (2009) (in Ukrainian)

  25. A. A. Rovenchak
    Oskar Fabian the first chair of theoretical physics on the University of Lvov
    Postepy Fizyki 60, No. 5, P. 205-210 (2009)

  26. B. V. Budnyy
    The quasiposition representation in the Snyder space-time
    J. Phys. Stud. 13, No. 3, 3002 (4 p.) (2009)

  27. I. O. Vakarchuk, O. I. Hryhorchak
    Density matrix of the many-boson system with the consideration of three- and four-particle direct correlations
    J. Phys. Stud. 13, No. 3, 3004 (28 p.) (2009)

  28. I. O. Vakarchuk, R. O. Prytula
    Temperature dependence of the pair distribution function of the liquid 4He
    J. Phys. Stud. 13, No. 2, 2003 (5 p.) (2009)

  29. M. I. Topilko, A. A. Rovenchak
    Thermodynamic functions of one-dimensional weakly-interacting harmonic oscillators with the Gentile statistics
    J. Phys. Stud. 13, No. 2, 2004 (8 p.) (2009)

  30. L. F. Blazhyevskyi, V. Yanishevsky
    A variation method in the optimization problem of the minority game model
    J. Phys. Stud. 13, No. 2, 2601 (7 p.) (2009)

  31. A. A. Rovenchak
    Oskar Fabian, the First Head of the Department for Theoretical Physics at the University of Lviv
    Acta Physica Polonica A 116, No. 2, 109-113 (2009)

  32. I. O. Vakarchuk, R. O. Prytula
    One-particle Density Matrix of Liquid 4He in the Pair Correlation Approximation
    Ukr. Fiz. Zh. 54, No. 7, 687-696 (2009)
    [Ukr J. Phys. 54, 686-695 (2009)]

  33. A. A. Rovenchak
    The relation between fractional statistics and finite bosonic systems in one-dimensional case
    Fiz. Nizk. Temp. 35, No. 5, 510-513 (2009)
    [Low Temp. Phys. 35, 400-403 (2009)]

  34. E. Kelih, S. Buk, P. Grzybek, A. A. Rovenchak
    Project Description: Designing and Constructing a Typologically Balanced Ukrainian Text Database
    in: Methods of Text Analysis: Omnibus volume (ČNU, Chernivtsi) 125-132 (2009)

  35. A. A. Rovenchak, J. Mačutek, Ch. Riley
    Distribution of complexities in the Vai script
    Glottometrics 18, 1-12 (2009)

  36. A. A. Rovenchak
    Towards the decipherment of the Bagam script
    Afrikanistik online (2009)
    [full text]

    37. 2008:

  37. I. O. Vakarchuk, R. O. Prytula
    Structure functions of liquid helium-4 with three- and four-particle indirect correlation taken into consideration
    Journal of Physical Studies 12, No 4, 4001 (12 p.) (2008)

  38. V. M. Tkachuk, S. I. Vakarchuk
    Supersymmetry of Pauli Hamiltonian and entanglement
    Journal of Physical Studies 12, No 4, 4004 (3 p.) (2008)

  39. L. F. Blazhyevskyi, Yu. S. Krynytskyi
    Dielectric characteristics of weakly-relativistic system of charged particles with spins
    Physical collection of Shevchenko Sci. Soc. 7, 360-368 (2008)

  40. I. O. Vakarchuk
    Casimir energy for the field with deformed Poisson brackets
    Physical collection of Shevchenko Sci. Soc. 7, 369-376 (2008)

  41. I. O. Vakarchuk, V. S. Pastukhov
    Bose-condensate in two-component Bose-liquid
    Journal of Physical Studies 12, No 3, 3002 (8 p.) (2008)

  42. I. O. Vakarchuk
    Theory of radiation and absorption of deformed field quanta
    Condens. Matter Phys. 11, No. 3(55), 409-416 (2008)

  43. T. V. Fityo
    Statistical physics in deformed spaces with minimal length
    Phys. Lett. A 372, No. 37, 5872-5877 (2008)

  44. M. M. Stetsko, V. M. Tkachuk
    Orbital magnetic moment of the electron in the hydrogen atom in a deformed space with minimal length
    Phys. Lett. A 372, No. 31, 5126-5130 (2008)

  45. I. O. Vakarchuk
    The Casimir effect in a deformed field
    J. Phys. A: Math. Theor. 41, No. 18, 185402 (10 p.) (2008)

  46. I. O. Vakarchuk, V. S. Pastukhov
    Density matrix of binary Bose-liquid in the approximation of pair correlations
    Journal of Physical Studies 12, No 1, 1001 (5 p.) (2008)

  47. A. M. Frydryszak, V. M. Tkachuk
    Quantum brachistochrone problem for a spin-1 system in a magnetic field
    Phys. Rev. A 77, No. 1, 014103 (4 p.) (2008)

  48. T. V. Fityo, I. O. Vakarchuk, V. M. Tkachuk
    The WKB approximation in the deformed space with the minimal length and minimal momentum
    J. Phys. A: Math. Theor. 41, No. 4, 045305 (6 p.) (2008)

  49. I. A. Vakarchuk
    One-particle density matrix of liquid 4He
    Teor. Mat. Fiz. 154, No. 1, 9-30 (2008) (in Russian)
    [Theor. Math. Phys. 154, 6-25 (2008)]

  50. S. Buk, A. A. Rovenchak
    Menzerath–Altmann law for syntactic structures in Ukrainian
    Glottotheory 1, No 1, 10-17 (2008)

  51. A. A. Rovenchak
    Starting an Online Concordance for Indigenous African Scripts: The Case of Vai
    Mande Languages and Linguistics: 2nd International Conference. St. Petersburg (Russia), September 15-17 2008: Abstracts and Papers 11-15 (2008)

  52. S. Buk, J. Mačutek, A. A. Rovenchak
    Some properties of the Ukrainian writing system
    Glottometrics 16, 63-79 (2008)

    53. 2007:

  53. A. A. Rovenchak, I. O. Vakarchuk
    Calculation of the condensate fraction in liquid helium-4
    Journal of Physical Studies (Lviv) 11, No. 4, 404-407 (2007)

  54. S. S. Pikh
    Spectroscopy of heavy mesons in the relativized potential model
    Journal of Physical Studies (Lviv) 11, No. 4, 396-403 (2007) (in Ukrainian)

  55. I. O. Vakarchuk, R. O. Prytula, A. A. Rovenchak
    Kinetic energy and heat capacity of liquid 4He
    Journal of Physical Studies (Lviv) 11, No. 3, 259-267 (2007) (in Ukrainian)

  56. V. M. Tkachuk
    Field equation in a deformed space with minimal length
    Journal of Physical Studies (Lviv) 11, No. 1, 41-44 (2007) (in Ukrainian)

  57. I. M. Ilkiv, A. A. Rovenchak
    The influence of weak interaction on the Bose-gas properties
    Journal of Physical Studies (Lviv) 11, No. 1, 122-131 (2007) (in Ukrainian)

  58. N. A. Sidletska
    Tunnelling of a particle with a position-dependent mass through a potential barrier
    Uzhhorod Univ. Sci. Herald. Ser. Phys. 21, 159-164 (2007) (in Ukrainian)

  59. L. F. Blazhyevskyi, M. V. Shljonzak
    Thermodynamic functions of the relativistic plasma
    Uzhhorod Univ. Sci. Herald. Ser. Phys. 21, 191-195 (2007) (in Ukrainian)

  60. M. M. Stetsko, V. M. Tkachuk
    Scattering problem in deformed space with minimal length
    Phys. Rev. A 76, No. 1, 012707 (7 p.) (2007)

  61. A. A. Rovenchak
    Weakly-Interacting Bosons in a Trap within Approximate Second Quantization Approach
    J. Low Temp. Phys. Vol. 148, Nos. 3/4, P. 411-416 (2007)

  62. C. Quesne, V. M. Tkachuk
    Generalized Deformed Commutation Relations with Nonzero Minimal Uncertainties in Position and/or Momentum and Applications to Quantum Mechanics
    SIGMA 3, 016 (18 p.) (2007)

  63. S. Buk, A. A. Rovenchak
    Statistical parameters of Ivan Franko's novel Perekhresni stežky (The Cross-Paths)
    Quantitative Linguistics 62: Exact methods in the study of language and text: dedicated to Professor Gabriel Altmann on the occasion of his 75th birthday / Edited by Peter Grzybek and Reinhard Koöhler (Berlin; New York: Mouton de Gruyter), 39-48 (2007)

    64. 2006:

  64. O. Derzhko, V. M. Myhal
    A microscopic theory of photonucleation: Density functional approach to the properties of a fluid of two-level atoms, a part of which is excited
    Condens. Matter Phys. 9, No. 4(48), 703-708 (2006)

  65. C. Quesne, V. M. Tkachuk
    Lorentz-covariant deformed algebra with minimal length
    Czech. J. Phys. 56, No. 10/11, 1269-1274 (2006)

  66. M. M. Stetsko
    Corrections to the ns levels of the hydrogen atom in deformed space with minimal length
    Phys. Rev. A 74, No. 6, 062105 (5 pages) (2006)

  67. O. V. Derzhko, V. M. Myhal
    The properties of a fluid of two-level atoms, a part of which is excited. Cavitation
    Journal of Physical Studies (Lviv) 10, No. 3, 203-207 (2006) (in Ukrainian)

  68. V. M. Tkachuk, S. I. Vakarchuk
    Pauli equation with position-dependent mass
    Journal of Physical Studies (Lviv) 10, No. 2, 81-85 (2006) (in Ukrainian)

  69. I. O. Vakarchuk
    Schrödinger's Cat and the Problem of Two Cultures
    in: Myśli o języku, nauce i wartościach: księga ofiarowana Profesorowi Jackowi Juliuszowi Jadackiemu w sześćdziesiątą rocznicę urodzin. Pod red. W. Strawinskiego, M. Grygianca i A. Brozek (Warszawa, Wydawnictwo Naukowe Semper) 203-212 (2006)

  70. C. Quesne, B. Bagchi, A. Banerjee, V. M. Tkachuk
    Hamiltonian with Position-Dependent Mass, Deformations and Supersymmetry
    in: Quantum Theory and Symmetries IV, Vol. 2: Proceedings of the IV International Symposium. Varna, Bulgaria, 15-21 August 2005. Ed. V. K. Dobrev (Heron Press, Sofia) 622-632 (2006)

  71. C. Quesne, V. M. Tkachuk
    Lorentz-covariant deformed algebra with minimal length and application to the (1 + 1)-dimensional Dirac oscillator
    J. Phys. A: Math. Gen. 39, 10909-10922 (2006)

  72. M. M. Stetsko, V. M. Tkachuk
    Perturbation hydrogen-atom spectrum in deformed space with minimal length
    Phys. Rev. A 74, No. 1, 012101 (5 pages) (2006)

  73. T. V. Fityo, I. O. Vakarchuk, V. M. Tkachuk
    One-dimensional Coulomb-like problem in deformed space with minimal length
    J. Phys. A: Math. Gen. 39, 2143-2149 (2006)

  74. T. V. Fityo, I. O. Vakarchuk, V. M. Tkachuk
    WKB approximation in deformed space with minimal length
    J. Phys. A: Math. Gen. 39, 379-387 (2006)

  75. D. S. Ivaneyko, J. Ilnytskyi, B. Berche, Yu. Holovatch
    Static and dynamic critical behaviour of 3d random-site Ising model: Different Monte Carlo algorithms
    J. Mol. Liq. 127, Iss. 1-3, 69-70 (2006)

    76. 2005:

  76. T. V. Fityo, V. M. Tkachuk
    Time-dependent Schrödinger equation with one know solution
    Journal of Physical Studies (Lviv) 9, No. 4, 299-303 (2005)

  77. O. V. Derzhko, V. M. Myhal
    The properties of a two-phase fluid of two-level atoms, a part of which is excited. A density functional approach
    Journal of Physical Studies (Lviv) 9, No. 2, 156-162 (2005) (in Ukrainian)

  78. M. V. Shljonzak
    Application of path-integral techniques for statistical mechanics of relativistic plasma
    Uzhhorod Univ. Sci. Herald. Ser. Phys. 17, 26-29 (2005) (in Ukrainian)
    [full text]

  79. I. O. Vakarchuk
    On Dirac theory in the space with deformed Heisenberg algebra: Exact solutions
    J. Phys. A: Math. Gen. 38, 7567-7576 (2005)

  80. I. O. Vakarchuk
    Reply to 'Comment on 'Kepler problem in Dirac theory for a particle with position-dependent mass''
    J. Phys. A: Math. Gen. 38, 6859 (2005)

  81. I. O. Vakarchuk
    The Kepler problem in Dirac theory for a particle with position-dependent mass
    J. Phys. A: Math. Gen. 38, 4727-4734 (2005)

  82. A. A. Rovenchak
    Energy Spectrum of an Interacting Bose-System
    Journal of Low Temperature Physics 138, Nos.1/2, 49-54 (2005)

  83. D. S. Ivaneyko, J. Ilnytskyi, B.Berche, Yu. Holovatch
    Criticality of the random-site Ising model: Metropolis, Swendsen-Wang and Wolff Monte Carlo algorithms
    Condens. Matter Phys. 8, 1(41), 149-162 (2005)

  84. B. Bagchi, A. Banerjee, C. Quesne and V. M. Tkachuk
    Deformed shape invariance and exactly solvable Hamiltonians with position-dependent effective mass
    J. Phys. A: Math. Gen. 38, 2929-2945 (2005)

  85. C. Quesne and V. M. Tkachuk
    Dirac oscillator with nonzero minimal uncertainty in position
    J. Phys. A: Math. Gen. 38, 1747-1765 (2005)

  86. A. A. Rovenchak
    Extraction of Interatomic Potentials from Structure of Liquids
    Central European Journal of Physics 3, 1, 47-60 (2005)

    87. 2004:

  87. B. V. Budnyj
    Variational perturbation theory for relativistic system of charged particles
    Visn. Lviv University. Ser. Phys. No. 37, 154-162 (2004) (in Ukrainian)

  88. I. O. Vakarchuk
    A self-consistent theory of liquid $^4$He
    Journal of Physical Studies (Lviv) 8, No. 3, 223-240 (2004)
    [abs] [full text]

  89. S. Buk, A. A. Rovenchak
    Rank-Frequency Analysis for Functional Style Corpora of Ukrainian
    Journal of Quantitative Linguistics 11, 3, 161-171 (2004)
    [abs]

  90. A. A. Rovenchak
    80 years of Bose-systems studies
    Svit Fizyky (World of Physics) ¹ 2(27), 3-9 (2004) (in Ukrainian)

  91. O. V. Knihinitskyi
    Caculation of the interatomic force constants for a cubic lattice in the long-wavelength approximation
    Journal of Physical Studies (Lviv) 8, No. 2, 141-146 (2004)
    [abs] [full text]

  92. C. Quesne and V. M. Tkachuk
    More on a SUSYQM approach to the harmonic oscillator with nonzero minimal uncertainties in position and/or momentum
    J. Phys. A: Math. Gen. 37, 10095-10113 (2004)

  93. O. O. Voznyak, V. M. Tkachuk
    Quasi-exactly solvable disordered Kronig-Penney model
    Journal of Physical Studies (Lviv) 8, No. 1, 16-22 (2004)
    [abs] [full text]

  94. C. Quesne and V. M. Tkachuk
    Deformed algebras, position-dependent effective masses and curved spaces: an exactly solvable Coulomb problem
    J. Phys. A: Math. Gen. 37, No. 14, 4267-4281 (2004)
    [abs]

  95. C. Quesne, K. A. Penson and V. M. Tkachuk
    Comment on: "Maths-type q-deformed coherent states for q>1": [Phys. Lett. A 313 (2003) 29]
    Physics Letters A 322, Issues 5-6, 402-404 (2004)
    [abs]

  96. Yu. Holovatch, D. S. Ivaneyko, B. Delamotte
    On the criticality of frustrated spin systems with noncollinear order
    Journal of Physics A: Mathematical and General 37, 11, 3569-3575 (2004)

    97. 2003:

  97. L. F. Blazhyevskyi, B. V. Budnyj, Yu. S. Krynytskyi
    Lagrangian and Hamiltonian functions for relativistic system of charged particles
    Journal of Physical Studies (Lviv) 7, No. 4, 367-374 (2003)
    [abs] [full text]

  98. I. Bolesta, O. M. Popel, T. Kulay
    The Symmetry Coordinates of the Fundamental Vibrations of the Crystal Ag$_2$CdI$_4$
    Journal of Physical Studies (Lviv) 7, No. 3, 268-274 (2003)
    [abs] [full text]

  99. C. Quesne, K. A. Penson, V. M. Tkachuk
    Revisiting maths-type q-deformed coherent states
    in: Proceedings of the 8th International Conference on Squeezed States and Uncertainty Relations. Puebla, Mexico-June 9-13, 2003. Eds. H.Moya-Cessa, R.Jáuregui, S.Hacyan and O.Castaños. (Rinton Press, Paramus, NJ). 336-341 (2003)

  100. A. M. Frydryszak, V. M. Tkachuk
    Aspects of pre-quantum description of deformed theories
    Czechoslovak J. Phys. 53, 11, 1035-1040 (2003)

  101. C. Quesne, V. M. Tkachuk
    Harmonic oscillator with nonzero minimal uncertainties in both position and momentum in a SUSYQM framework
    J. Phys. A: Math. Gen. 36, 10373-10389 (2003)

  102. B. V. Budnyj
    Electromagnetic Interaction Screening in a Weakly Relativistic Degenerate Electron Gas
    Uzhhorod Univ. Sci. Herald. Ser. Phys. 14, 164-170 (2003) (in Ukrainian)
    [full text]

  103. O. V. Knihinitskyi
    Calculation of the Parameters of the Interatomic Potentials for Cubic Lattices in the Long-Wave Approximation
    Uzhhorod Univ. Sci. Herald. Ser. Phys. 14, 67-72 (2003) (in Ukrainian)
    [full text]

  104. A. A. Rovenchak
    Interatomic Potentials of Dilute Many-Boson System
    Uzhhorod Univ. Sci. Herald. Ser. Phys. 14, 16-19 (2003) (in Ukrainian)
    [full text]

  105. I. O. Vakarchuk
    The Magnetic Bose Liquid
    Journal of Physical Studies (Lviv) 7, No. 1, 40-49 (2003)
    [abs] [full text]

  106. C. Quesne, K. A. Penson, V. M. Tkachuk
    Maths-type q-deformed coherent states for q>1
    Phys. Lett. A 313, 29-36 (2003)
    [abs]

  107. M. Dudka, R. Folk, Yu. Holovatch, D. S. Ivaneyko
    Effective critical behaviour of diluted Heisenberg-like magnets
    J. Magn. Magn. Mater. 256 , 1-3, 243-251 (2003)

  108. V. M. Tkachuk, T. V. Fityo
    Multidimensional quasi-exactly solvable potentials with two known eigenstates
    Phys. Lett. A 309, 351-356 (2003)

  109. A. A. Rovenchak
    Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K
    Fiz. Nizk. Temp. 29, No. 2, 145-148 (2003)
    [Low Temp. Phys. 29, 105-107 (2003)]

  110. R. Lavrycky, I. O. Vakarchuk, O. M. Popel
    Physics at Lviv University before 1939
    in: Physics and Mathematics at Wroclaw University. Past and Present. Proceedings of the 17th Max Born Symposium. Wroclaw, Poland, 18-19 October 2002. Ed. by J.Lukierski and H.Rechenberg 71-76 (2003)

  111. R.Folk, Yu. Holovatch, T. I. Yavors'kii
    Critical exponents of a three-dimensional weakly diluted quenched Ising model
    Usp. Fiz. Nauk 173, 2, 175-200 (2003)
    [Physics -- Uspekhi 46, 169-192 (2003).]

    112. 2002:

  112. A. A. Rovenchak
    Helium-4 Energy and Specific Heat in Superfluid and Normal Phase
    Journal of Physical Studies (Lviv) 6, No. 3, 298-304 (2002)
    [abs] [full text]

  113. V. M. Tkachuk, O. O. Voznyak
    Quasi-exactly solvable periodic and random potentials
    Phys. Lett. A 301, 177-183 (2002)

  114. T. V. Fityo
    A new class of non-Hermitian Hamiltonians with real spectra
    J. Phys. A: Math. Gen. 35, No.28, 5893-5897 (2002)

  115. V. M. Tkachuk, S. I. Vakarchuk
    Quasi-exactly solvable Pauli equation
    Journal of Physical Studies (Lviv) 6, No. 2, 147-152 (2002)
    [abs] [full text]

  116. V. M. Tkachuk, O. O. Voznyak
    Supersymmetric approach for generating quasi-exactly solvable periodic potentials
    Journal of Physical Studies (Lviv) 6, No. 1, 40-45 (2002)
    [abs] [full text]

  117. I. O. Vakarchuk
    The $1/N$-expansion in quantum mechanics. High-order approximations
    Journal of Physical Studies (Lviv) 6, No. 1, 46-54 (2002)
    [abs] [full text]

  118. M.Dudka, Yu. Holovatch, T. I. Yavors'kii.
    Stability of the mixed fixed point of the mn-vector model
    Acta Physica Slovaca 52, 4, 323-328 (2002)

  119. I. O. Wakarczuk
    Uniwersytet a problem dwóch kultur
    Konspekt: Pismo Akademii Pedagogicznej w Krakowie Nr. 9, 5-8 (zima 2001/2002)

    120. 2001:

  120. A.M.Frydryszak, V. M. Tkachuk
    Lie symmetry, discrete symmetry and supersummetry of the Pauli Hamiltonian
    Czechoslovak Journal of Physics 51, No.12, 1325-1329 (2001)

  121. I. O. Vakarchuk, A. A. Rovenchak
    Representation of the short-range interactions in liquid helium via modified hard sphere potentials
    Journal of Physical Studies (Lviv) 5, No. 2, 126-130 (2001)
    [abs] [full text]

  122. I. O. Vakarchuk
    Is a quantum a great guesswork or a "forced" step?
    Journal of Physical Studies (Lviv) 5, No. 1, 1-6 (2001)
    [abs] [full text]

  123. I. O. Vakarchuk, A. A. Rovenchak
    Thermodynamics of the Bose-system with a small number of particles
    Condens. Matter Phys. (Lviv) 4, No. 3(27), 431-447 (2001)
    [abs] [full text]

  124. L. F. Blazhyevskyi, A.Duviryak, A.Nazarenko
    Statistical description of the systems with constraints. Classical partition function of relativistic system of charged particles
    Physical collection of Shevchenko Sci. Soc. 4, 162-167 (2001) (in Ukrainian)

  125. L. F. Blazhyevskyi
    On one representation of the partition function within Grassmann variables
    Teor. Mat. Fiz. 126, No.2, 301-310 (2001) (in Russian)

  126. O. V. Derzhko, V. M. Myhal
    Nucleation phenomena in a nonuniform atomic fluid in the electrical field
    J. Mol. Liquids 92, 15-20 (2001)

  127. V. M. Tkachuk, T. V. Fityo
    Factorization and superpotential of the PT symmetric Hamiltonian
    J. Phys. A 34, 8673-8677 (2001)

  128. V. M. Tkachuk
    Supersymmetric approach for generating quasi-exactly solvable potentials with arbitrary two known eigenstates
    J. Phys. A 34, 6339-6348 (2001)

  129. V. M. Tkachuk, S. I. Vakarchuk
    Ground state of the electron in the magnetic field of a straight current
    J. Phys. A 34, 653-662 (2001)

    130. 2000:

  130. V. M. Tkachuk
    Quantum topological phase of an electric dipole circulating around a ferromagnetic wire
    Phys. Rev. A 62, 052112 (2000)

  131. V. M. Tkachuk, P. Roy
    Motion of a spin 1/2 particle in shape invariant scalar and magnetic fields
    J. Phys. A 33 , 4159-4167 (2000)
    [Preprint quant-ph/9911048]

  132. I. O. Vakarchuk, V. V. Babin, A. A. Rovenchak
    A potential energy of interaction between helium atoms
    Journal of Physical Studies (Lviv) 4, 16-22 (2000)
    [abs]

  133. R. Folk, Yu. Holovatch, T. I. Yavors'kii
    Pseudo-$\varepsilon$ expansion of six-loop renormalization-group functions of an anisotropic cubic model
    Phys. Rev. B 62, No 18, 12195-12200 (2000) (Erratum: Phys. Rev. B (2001) V.63, P.189901(E).)

  134. R. Folk, Yu. Holovatch, T. I. Yavors'kii
    Effective and asymptotic critical exponents of a weakly diluted quenched Ising model: Three-dimensional approach versus $\sqrt{\varepsilon}$-expansion
    Phys. Rev. B 61, No 22, 15114-15129 (2000)

  135. V. V. Fourman
    The criteria for choosing a pseudopotential in the theory of metals
    Journal of Physical Studies (Lviv) 3, 306-312 (2000)
    [abs]

    136. 1999:

  136. I. O. Vakarchuk, V. V. Babin
    Low-temperature asymptotic behaviour of the impurity effective mass in surerfluid 4He
    Journal of Physical Studies (Lviv) 3, 468-473 (1999) (in Ukrainian)
    [abs]

  137. I. O. Vakarchuk
    Once more on the superfluid 4He
    Journal of Physical Studies (Lviv) 3, 264-271 (1999)
    [abs]

  138. L. F. Blazhyevskyi
    Statistical density matrix and Hamiltonian of a system of relativistic charged particles
    Journal of Physical Studies (Lviv) 3, 284-290 (1999) (in Ukrainian)
    [abs]

  139. L. F. Blazhyevskyi, A. Ya. Marko
    Relativistic Schroedinger equation for spinless particles
    Visn. Lviv. un-tu. Ser. Fiz. N.32 , 1-7 (1999)

  140. V. M. Tkachuk
    Binding of neutral atoms to ferromagnetic wire
    Phys. Rev. A 60, 4715-4717 (1999)

  141. V. M. Tkachuk, S. I. Vakarchuk
    Broken supersymmetry for the electron in the magnetic field of straight current
    Journal of Physical Studies (Lviv) 3, 291-294 (1999)
    [abs]

  142. V. M. Tkachuk, P. Roy
    Supersymmetry of a spin 1/2 particle on the real line
    Phys. Lett. A 263, 245-249 (1999)
    [Preprint quant-ph/9905102]

  143. V. M. Tkachuk
    Supersymmetric Method for Constructing Quasi-Exactly Solvable Potentials
    Condens. Matter Phys. (Lviv) 2, No. 2(18), 197-204 (1999)
    [full text] [Preprint quant-ph/9806030]

  144. R. Folk, Yu. Holovatch, T. I. Yavors'kii
    The correction-to-scaling exponent in dilute systems
    JETP Letters 69, No 10, 747-752 (1999) (Pis'ma v ZhETF, T.69, No 10, 698-702)

  145. O. V. Derzhko, T. Krokhmalskii, O. Zaburannyi
    Spin-1/2 XX chains in a transverse field with regular nonuniformity or correlated Lorentzian disorder
    Condens. Matter Phys. (Lviv) 2, No. 2(18), 345-350 (1999)
    [full text]

  146. Yu. Blazhyevski, Yu. S. Krynytskyi
    The influence of deformation polarization on the dielectric permittivity of ion system
    Visnyk L'viv. Universytetu. Ser. Fiz. N.31, 6-7 (1999) (in Ukrainian)

  147. T. V. Kuliy, V. M. Tkachuk
    Quasi-Exactly Solvable Potentials with Three Known Eigenstates
    J. Phys. A 32, No. 11, 2157-2169 (1999)
    [Preprint quant-ph/9807025]

  148. V. M. Tkachuk
    Supersymmetric Method for Constructing Quasi-Exactly and Conditionally-Exactly Solvable Potentials
    J. Phys. A 32, No. 7, 1291-1300 (1999)
    [Preprint quant-ph/9808050]

  149. S. I. Vakarchuk
    Witten indexes for the problem of the electron motion in magnetic field
    Visnyk L'viv. Universytetu. Ser. Fiz. N.31, 17-19 (1999) (in Ukrainian)

  150. V. V. Kovaltchuk
    About the influence of relativistic attractive forces on the thermodynamic characteristics of atomic hydrogen
    Visnyk L'viv. Universytetu. Ser. Fiz. N.31, 47-50 (1999) (in Ukrainian)

    151. 1998:

  151. L. F. Blazhyevskyi, V. V. Kovaltchuk
    About taking into account of relativistic corrections for a resonant atomic interaction
    Visn. Lviv. un-tu, Sr. Fiz. N.30, 6-8 (1998) (in Ukrainian)

  152. V. M. Tkachuk
    Quasi-exactly solvable potentials with two known eigenstates
    Phys. Lett. A 245, 177-182 (1998)

  153. I. O. Vakarchuk, V. M. Tkachuk, T. V. Kuliy
    Magnetic Properties of Dilute Alloys: Equations for Magnetization and Its Structural Fluctuations
    Phys. Stat. Solidi (b) 208, 167-186 (1998)
    [full text]

  154. I. O. Vakarchuk, V. V. Babin
    Impurity effective mass in surerfluid $^4$He
    Condens. Matter Phys (Lviv) 1, No 1(13), 161-168 (1998)
    [abs] [full text]

  155. I. O. Vakarchuk, V. V. Babin
    Impurity effective mass in surerfluid $^4$He
    Visnyk L'viv. Universytetu. Ser. Fiz. 31, 13-16 (1998) (in Ukrainian)

  156. Yu. Holovatch, T. I. Yavors'kii
    Critical exponents of the diluted Ising model between dimensions 2 and 4
    J. Stat. Phys 92, No 5/6, 785-808 (1998)

  157. S. S. Pikh, O. M. Pavliuk
    Realtivistic description of the mesons in the potential model
    Visn. Lviv. un-tu, Sr. Fiz. N.30, 14-20 (1998) (in Ukrainian)

  158. O. O. Voznyak
    Supersymmetric representation for the temperature Green function of the lattice gas
    Visnyk L'viv. Universytetu. Ser. Fiz. 31, 13-16(??) (1998) (in Ukrainian)

  159. L. F. Blazhyevskyi, H. Hil', Yu. S. Krynytskyi, Yu. Blazhyevskyi
    The influence of spin interactions on dielectric and magnetic properties of relativistic of charged particle systems
    Physical collection of Shevchenko Sci. Soc. 3, 315-326 (1998) (in Ukrainian)

  160. L. F. Blazhyevskyi, Yu. S. Krynytskyi
    The canonical $u$--$v$ Bogolubov transformation in a weakly relativistic statistical theory of a charged particle system
    Condens. Matter Phys. 1, No. 3(15), 569-574 (1998)
    [abs] [full text]

  161. O. V. Derzhko, O. Zaburannyi, J. W. Tucker
    Initial static susceptibilities of nonuniform and random Ising chains.
    Journal of Magnetism and Magnetic Materials 186, No. 1-2, 188-198 (1998)

  162. O. V. Derzhko, T. Krokhmalskii
    Numerical Approach for the Study of the Spin-1/2 XY Chains Dynamic Properties
    Phys. Stat. Solidi (b) 208, 221-248 (1998)
    [full text]

  163. O. V. Derzhko, V. M. Myhal
    Nucleation phenomena in atomic fluid in the electrical field
    Journal of Physical Studies (Lviv) 2, 339-345 (1998) (in Ukrainian)
    [abs]

  164. V. V. Fourman, P.M.Yakibchuk, S.O.Vakarchuk, M.I.Zhovtanetskiy
    Taking into account of spin-orbit coupling during calculation of formfactors of nonlocal model potential
    Journal of Physical Studies (Lviv) 2, 346-356 (1998) (in Ukrainian)
    [abs]

  165. P. M. Yakibchuk, V. V. Fourman, S. O. Vakarchuk
    Density of state for transition and rare-earth metals
    Visnyk L'viv. Universytetu. Ser. Fiz. N.30, 9-13 (1998) (in Ukrainian)

  166. R. Folk, Yu. Holovatch, T. I. Yavors'kii
    Five-loop critical exponents of the weakly diluted Ising model: 3d approach versus $\sqrt{\varepsilon}$-expansion
    Journal of Physical Studies (Lviv) 2, 213-220 (1998)
    [abs]

  167. Yu. Holovatch, T. I. Yavors'kii
    General dimension weakly diluted Ising model at criticality. A field theoretical approach
    Proceedings of "11th seminar oh phase transitions and critical phenomena", Polanica Zdroj, Poland, May 4-7. 146-148 (1998)

  168. I. O. Vakarchuk, R.E.Rykalyuk, L.M.Yankiv-Vitkovska
    A temperature dependence of the width of the atom spectral lines in stellar atmospheres
    Journal of Physical Studies (Lviv) 2, 16-22 (1998) (in Ukrainian)
    [abs]

  169. O. V. Derzhko, O. Zaburannyi
    Static susceptibilities of nonuniform and random Ising chains
    Journal of Physical Studies (Lviv) 2, 128-135 (1998)
    [abs]

  170. V. M. Tkachuk
    Supersymmetry of a nonstationary Pauli equation
    J. Phys. A 31, 1859-1866 (1998)

    171. 1997:

  171. O. V. Derzhko, T. Krokhmalskii
    Dynamic structure factor of the spin-1/2 transverse Ising chain
    Physical Review B 56, No.18, 11659-11665 (1997)

  172. O. V. Derzhko, J. Richter
    Solvable model of random spin-1/2 XY chain
    Physical Review B 55, 21, 14298-14310 (1997)

  173. V. M. Tkachuk, S. I. Vakarchuk
    Supersymmetry of the Electron in a Three-Dimensional Magnetic Field
    Phys. Lett. A 228, 141-145. (1997)

  174. Yu. Holovatch, T. I. Yavors'kii
    The field theoretical approach to study of the critical behaviour of the weakly diluted quenched Ising model in general dimensions. Three-loop approximation
    Condens. Matter Phys. No 11 , 87-108 (1997)

  175. S. S. Pikh, V. O. Ratz
    Relativistic Jost funstions for mesons
    Visnyk L'viv. Universytetu. Ser. Fiz. N.29, 5-7 (1997) (in Ukrainian)

  176. O. V. Derzhko, T. Verkholyak
    One-dimensional spin-1/2 XY models as a testing ground for spin systems theory methods
    Physica Status Solidi (b) 200, No.1, 255-263 (1997)

  177. O. V. Derzhko, T. Krokhmalskii, T. Verkholyak
    Thermodynamics and spin correlations for Ising chain in random transverse field
    Philosophical Magazine B 76, No.5, 855-858 (1997)

  178. O. V. Derzhko, T. Krokhmalskii
    Random s=1/2 XY chains and the theory of quasi-one-dimensional ferroelectrics with hydrogen bonds
    Ferroelectrics 192, No.1-4, 21-27 (1997)

  179. V. M. Tkachuk
    Supercharges in the case of electron motion in nonstationary magnetic field
    Journal of Physical Studies (Lviv) 1, 314-316 (1997) (in Ukrainian)
    [abs]

  180. L. F. Blazhyevskyi
    Path integrals for the Liouville equation.
    Journal of Physical Studies (Lviv) 1, 356-361 (1997) (in Ukrainian)
    [abs]

  181. O. V. Derzhko, V. M. Myhal
    Nonuniform properties of atomic fluid in electrical field
    Journal of Physical Studies (Lviv) 1, 402-412 (1997) (in Ukrainian)
    [abs]

  182. O. M. Popel, O. V. Knihinitskyi
    The vibrational spectra of units of amorphous SiO2.
    Journal of Physical Studies (Lviv) 1, 151-155 (1997) (in Ukrainian)
    [abs]

  183. I. O. Vakarchuk
    New results for the distribution functions of many-particle quantum systems
    Journal of Physical Studies (Lviv) 1, 156-168 (1997) (in Ukrainian)
    [abs]

  184. L. F. Blazhyevskyi, Yu. S. Krynytskyi
    The weakly relativistic system of charged particles with spins in the external electromagnetic field
    Journal of Physical Studies (Lviv) 1, 191-200 (1997) (in Ukrainian)
    [abs] [full text]

  185. L. F. Blazhyevskyi, H. B. Hil', Yu. S. Krynytskyi
    Many-particle correlation effects and magnetism of weakly relativistic electron gas
    Condens. Matter Phys. (Lviv) No.10, 3-8 (1997)
    [abs] [full text]

  186. I. O. Vakarchuk, K. Vasylyna
    Calculation of the density matrix of liquid helium 4
    Condens. Matter Phys. (Lviv) Iss. 9, 117-126 (1997)
    [abs] [full text]

  187. O. V. Derzhko, T. M. Verkholyak
    One exactly solvable random spin-1/2 XY chain
    Low Temp. Phys. 23, No.9, 733-737 (1997)

  188. O. V. Derzhko, T. Krokhmalskii
    Dynamic susceptibility of spin-1/2 Ising chain in transverse field
    Low Temp. Phys. 23, No.7, 541-544 (1997)

  189. O. V. Derzhko, T. Verkholyak
    One exactly solvable magnetic chain with quenched randomness
    Materials Science & Engineering A 226-228, 745-748 (1997)

  190. O. V. Derzhko, T. Krokhmalskii, T. Verkholyak
    Thermodynamical and dynamical properties of quenched quantum spin chains
    Materials Science & Engineering A 226-228, 1049-1052 (1997)

    191. 1996:

  191. O. V. Derzhko, J. Richter
    One variation on Lloyd's theme
    Physics Letters A 222, No.5, 338-344 (1996)

  192. I. O. Vakarchuk, P. A. Hlushak
    Calculation of Thermodynamic Functions of Superfluid 4He at Low Temperatures. 1. Free Energy
    Ukr. Fiz. Zhurn. 41, 569-576 (1996) (in Ukrainian)

  193. O. V. Derzhko, T. Krokhmalskii, T. Verkholyak
    Thermodynamical properties of random spin-1/2 XY chain with Dzyaloshinskii-Moriya interaction
    J. Magn. Magn. Matter. 157-158, 421-423 (1996)

  194. O. V. Derzhko, A. Ph. Moina
    Bose Commutation Rule Approximation in the Theory of Spin Systems and Elementary Excitation Spectrum
    Phys. Stat. Sol. (b) 196, 237-241 (1996)

  195. L. F. Blazhyevskyi, H. B. Hil', S. S. Semak
    Some Problems of the Construction of Weakly Relativistic Mechanics
    Journal of Physical Studies (Lviv) 1, 1-11 (1996) (in Ukrainian)
    [abs]

  196. I. O. Vakarchuk
    Statistical Operator of a System of Identical Interacting Particles in Coordinate Representation
    Journal of Physical Studies (Lviv) 1, 25-38 (1996) (in Ukrainian)
    [abs]

  197. V. M. Tkachuk, S. I. Vakarchuk
    N = 4 Supersymmetry of Electron in the Magnetic Field
    Journal of Physical Studies (Lviv) 1, 39-41 (1996)
    [abs]

  198. V. M. Tkachuk
    The Supersymmetry Representation for Correlation Function of Disordered Systems.
    Condens. Matter Phys. (Lviv) Iss. 6, 123-140 (1996)
    [Preprint ESI92, Vienna, 1994, 12p.]

  199. V. V. Fourman, P.M.Yakibchuk
    Pseudopotential Within the Frames of Phase Functions Method. The Structure of Model Pseudopotential of Transition and Rare-Earth Metals
    Journal of Physical Studies (Lviv) 1, 134-147 (1996) (in Ukrainian)
    [abs]

    200. 1995:

  200. I. O. Vakarchuk, V. M. Tkachuk, T. V. Kuliy
    The Influence of Structure Disorder on Mean atomic Moment Fluctuations and the Spin-Wave Spectrum
    J. Magn. Magn. Matter. 146, 191-194 (1995)

  201. I. O. Vakarchuk
    Density Matrix of the System of Identical Particles Interacting via Oscillator Forces
    Condens. Matter Phys. (Lviv) Iss. 5, 203-209 (1995)

  202. L. F. Blazhyevskyi
    Field aspects of the method of collective variables for the system of charged particles
    Condensed Matter Physics (Lviv) N.6, 23-34 (1995)
    [abs] [full text]

  203. A. A. Rovenchak, S. S. Pikh
    Rege Trajectories in Potential Model
    Visnyk L'viv. Universytetu. Ser. Fiz. N.28, 11-15 (1995) (in Ukrainian)
    [abs] [full text]

  204. S. S. Pikh, I. M. Savvateev
    Relativistic Model of Mesons
    Visnyk L'viv. Universytetu. Ser. Fiz. N.28, 5-9 (1995) (in Ukrainian)

    205. 1994:

  205. I. O. Vakarchuk, V. M. Tkachuk, T. V. Kuliy
    The Influence of Spins' Structure Fluctuations on the Spectrum and Damping of Spin Waves in Amorphous Ferromagnet
    Condens. Matter Phys. (Lviv) Iss. 3, 176-180 (1994)

  206. I. O. Vakarchuk, V. M. Myhal, V. M. Tkachuk
    Electron-Phonon Interaction Influence on Electron and Phonon Excitations in Amorphous Metals
    Phys. Stat. Sol. (b) 185, 101-115 (1994)

  207. V. M. Tkachuk
    Supersymmetry in quantum Mechanics
    65p. (Ivan Franko Lviv State University, Lviv, 1994) (in Ukrainian)

  208. L. F. Blazhyevskyi, H. B. Hil', V. S. Yanishevskyi
    On One Way to Receive the Group Decompositions in Statistical Physics
    Preprint of the National Ukrainian Academy of Sciences. Institute for Condensed Matter Physics: IFKS-94-7R Lviv, 17p (1994) (in Russian)

  209. L. F. Blazhyevskyi, I. M. Vasyl'kiv, H. B. Hil'
    The Path Integral for the Temperature Green Functions
    Visnyk L'viv. Universytetu. Ser. Fiz. N 27, 7-11 (1994) (in Ukrainian)

  210. L. F. Blazhyevskyi, H. B. Hil', S. S. Semak
    The Thermodynamical Equivalence and Hamilton's Statistical Description of the Weakly Relativistic Charged Particles Systems
    Physical Collection of Shevchenko Scientific Society in Lviv 2, 21-28 (1994) (in Ukrainian)

  211. I. O. Vakarchuk, P. A. Hlushak
    Mean Kinetic Energy and Bose-Condensate Fraction in Superfluid 4He at Low Temperatures
    Preprint of the National Ukrainian Academy of Sciences. Institute for Condensed Matter Physics: IFKS-94-10U Lviv, 40p (1994) (in Ukrainian)