2017

  1. Lobachevsky geometry in TTW and PW systems
    T.Hakobyan, A.Nersessian, H.Shmavonyan
    10.1134/S1063778817030085
    Phys.Atom.Nucl. 80 (2017) no.3, 598-604
    arXiv:1512.07489 [math-ph]
    Proc. of 9th Conference on Quantum Theory and Symmetries (QTS-9) Yerevan, July 13 - 18, 2015

  2. Dunkl operator, integrability, and pairwise scattering in rational Calogero model
    D.Karakhanyan
    10.1134/S1063778817030103
    Phys.Atom.Nucl. 80 (2017) no.3, 520-528
    Proc. of 9th Conference on Quantum Theory and Symmetries (QTS-9) Yerevan, July 13 - 18, 2015

  3. Two-center Coulomb problem with Calogero interaction
    T. Hakobyan, A. Nersessian
    10.1134/S106377881702020X
    Phys.Atom.Nucl. 80 (2017) no.2, 383-388
    Proc. of 9th Conference on Quantum Theory and Symmetries (QTS-9) Yerevan, July 13 - 18, 2015

  4. Orthogonal and symplectic Yangians: oscillator realization
    D. Karakhanyan, Roland Kirschner
    10.1088/1742-6596/804/1/012022
    J.Phys.Conf.Ser. 804 (2017) no.1, 012022
    Proc. of 24th Conference on Integrable Systems and Quantum Symmetries (ISQS-24) 4-18 Jun 2016. Prague

  5. Constants of motion in deformed oscillator and Coulomb systems
    Tigran Hakobyan, Armen Nersessian, Hovhannes Shmavonyan
    Physics of Particles and Nuclei Letters, 14 (2017)  No. 2, 400-402
    Proc. of Workshop on Supersymmetries and Quantum Symmetries, Dubna, 3-8 August 2015

  6. Metaplectic R-matrices
    A. P. Isaev, D. Karakhanyan, R. Kirschner
    Physics of Particles and Nuclei Letters, 14 (2017)   No. 2, 360-364
    Proc. of Workshop on Supersymmetries and Quantum Symmetries, Dubna, 3-8 August 2015

  7. Integrability of Calogero–Coulomb problems 
    Tigran Hakobyan, Armen Nersessian 
    Physics of Particles and Nuclei Letters, 14 (2017)  No. 2, 331-335
    Proc. of Workshop on Supersymmetries and Quantum Symmetries, Dubna, 3-8 August 2015

  8. Yangians and Yang–Baxter R-operators for ortho-symplectic superalgebras 
    J. Fuksa, A.P. Isaev D. Karakhanyan R. Kirschner
    Nucl.Phys. B917 (2017) 44-85
    [arXiv:1612.04713[math-ph]]

  9. Symmetries in superintegrable deformations of oscillator and Coulomb systems: Holomorphic factorization
    T.Hakobyan, A.Nersessian and H.Shmavonyan
    Phys. Rev.D 95 (2017) 025014
    [arXiv:1612.00794[hep-th]]

  10. SU(1,2) invariance in two-dimensional oscillator
    S.Krivonos and A.Nersessian,
    JHEP 1702 (2017) 006
    [arXiv:1610.02499[hep-th]] 

 

2016 

  1. Coulomb systems with Calogero interaction
    T.Hakobyan, A.Nersessian
    Proc. of the Yerevan State University, Phys. Math. Series, 3 (2016) 15-19

  2. On fusion matrix in N=1 super Liuville field theory
    H.Poghosyan, G.Sarkissian
    Proc. of the Yerevan State University, Phys. Math. Series, 3 (2016) 32-36

  3. Spherical calogero model with oscillator/Coulomb potential:quantum case
    F. Correa, T.Hakobyan, O. Lechtenfeld and A. Nersessian,
    Phys.Rev.D93 (2016) no.12, 125009
    [arxiv: 1604.00027][hep-th]].

  4. Spherical calogero model with oscillator/Coulomb potential:classical case
    F. Correa, T.Hakobyan, O. Lechtenfeld and A. Nersessian, 
    Phys.Rev.D93 (2016) no.12, 125008
    [arxiv: 1604.00026][hep-th]].
  5. Comments on fusion matrix in N=1 super Liouville field theory
    Hasmik Poghosyan, Gor Sarkissian
    Nucl.Phys. B 909 (2016) 458-479
    arXiv:1602.07476 [hep-th]

  6. The light asymptotic limit of conformal blocks in Toda field theory
    Hasmik Poghosyan, Rubik Poghossian , Gor Sarkissian
    JHEP 1605 (2016) 087
    arXiv:1602.04829 [hep-th]

  7. Yang-Baxter relations with orthogonal or symplectic symmetry
    D. Karakhanyan, R. Kirschner
    J.Phys.Conf.Ser. 670 (2016) no.1, 012029
    DOI: 10.1088/1742-6596/670/1/012029
    Proc. of 23rd Int. Conference on Integrable Systems and Quantum Symmetries, 23-27 June 2015, Prague

  8. Orthogonal and symplectic Yangians and Yang-Baxter R-operators
    A.P. Isaev, D. Karakhanyan, R. Kirschner
    Nuclear Physics B, 904(2016), 124-147
    arXiv:1511.06152 [math-ph]

  9. Integrability and separation of variables in Calogero-Coulomb-Stark and two-center Calogero-Coulomb systems
    Tigran Hakobyan, Armen Nersessian
    Phys.Rev. D 93(2016) no.4, 045025
    arXiv:1509.01077 [math-ph]

2015

  1. Magnetism-driven ferroelectricity in spin-1/2 XY chains
    O. Menchyshyn, V. Ohanyan, T. Verkholyak, T. Krokhmalskii, O. Derzhko
    Phys. Rev. B 92 (2015) 184427
    arXiv:1507.06457[cond-mat.str-el]

  2. On the absence of actual plateaus in zero-temperature magnetization curves of quantum spin clusters and chains
    V.Ohanyan, O.Rojas, J.Strecka, S.Bellucci
    Phys. Rev. B 92 (2015), 214423
    arXiv:1506.02933[cond-mat.str-el]

  3. On classical and semiclassical properties of the Liouville theory with defects
    Hasmik Poghosyan, Gor Sarkissian
    JHEP 1511, 005 (2015)
    arXiv:1505.00366[hep-th]

  4. Runge-Lenz vector in Calogero-Coulomb problem
    T.Hakobyan, A.Nersessian
    Phys. Rev. A 92 (2015) 022111
    arXiv:1504.00760[hep-th]

  5. Lowest-energy states in parity-transformation eigenspaces of SO(N) spin chain
    Tigran Hakobyan
    Nuclear Physics B, 898(2015), 248–258
    arXiv:1412.8177[cond-mat.str-el]

  6. On the algebra of Dunkl angular momentum operators
    M.Feigin and T.Hakobyan,
    JHEP 1511, 107 (2015)
    arXiv:1409.2480 [math-ph]

2014

  1. A unified mode decomposition method for physical fields in homogeneous cosmology
    Zh. Avetisyan
    Phys.Part.Nucl.Lett. 11 (2014) 7, 996-998
    DOI: 10.1134/S1547477114070024

  2. Spherical mechanics for a particle near the horizon of extremal black hole
    A. Galajinsky, A. Nersessian, A. Saghatelian
    Phys.Part.Nucl.Lett. 11 (2014) 7, 890-893
    DOI: 10.1134/S154747711407019X

  3. On integrable isospin particle system on high dimensional quaternionic systems
    Vahagn Yeghikyan
    Phys.Part.Nucl.Lett. 11 (2014) 7, 1003-1005
    DOI: 10.1134/S1547477114070474

  4. Superintegrability of (generalized) Calogero models with oscillator or Coulomb potential
    T.Hakobyan, O.Lechtenfeld and A.Nersessian,
    Phys. Rev. D 90 (2014) 101701(R)
    arXiv:1409.8288 [hep-th]

  5. A unified mode decomposition method for physical fields in homogeneous cosmology
    Zh. Avetisyan
    Reviews in Mathematical Physics 26 (2014), 1430001
    arXiv:1212.2408 [math-ph]

  6. The structure of invariants in conformal mechanics
    T.Hakobyan,D.Karakhanyan, O.Lechtenfeld
    Nucl. Phys. B 886(2014) 399-420
    arXiv:1402.2288

  7. Higher-derivative N=4 superparticle in three-dimensional spacetime
    N.Kozyrev, S.Krivonos, O.Lechtenfeld, A.Nersessian
    Phys. Rev. D 89(2014), 045013
    arXiv:1311.4540 [hep-th]

  8. Magnetization non-rational quasi-plateau and spatially modulated spin order in the single-chain magnet, [{(CuL)_2 Dy}{Mo(CN)_8}] 2CH_3CN H_2O
    S.Bellucci, V. Ohanyan, O. Rojas
    EPL 105, 47012 (2014) arXiv:1310.2811 [cond-mat.stat-mech]

  9. Defects, Non-abelian T-duality, and the Fourier-Mukai transform of the Ramond-Ramond fields
    E. Gevorgyan, G. Sarkissian
    JHEP 1403, 035 (2014) arXiv:1310.1264 [hep-th]

  10. Landau problem on the rotational ellipsoid, hyperboloid and paraboloid of revolution,
    E.Gevorgyan, A.Nersessian, V.Ohanyan and E.Tolkachev
    Mod. Phys. Lett. A 29 (2014), 1450148
    arXiv:1304.3221 [math-ph]

  11. Rigid particle revisited: extrinsic curvature yields the Dirac equation
    A.Deriglazov and A.Nersessian
    Physics Letters A378 (2014) 1224-1227
    [arXiv:1303.0483][hep-th]

2013

  1. Action-angle variables for spherical mechanics related to near horizon extremal Myers–Perry black hole
    A.Galajinsky, A.Nersessian and A.Saghatelian
    Journal of Physics: Conference Series 474 (2013) 012019
    Proc. of XXI Colloquium on Integrable Systems and Quantum Symmetries, Prague, 12-16 June 2013

  2. The completion of mode decomposition program in FRW spacetimes
    Zh.Avetisyan
    Armenian Journal of Physics, 6 (2),85-91(2013)

  3. Zero-curvature condition in Calogero model
    D. Karakhanyan, Sh. Khachatryan
    arXiv:1309.4896

  4. Superintegrable models related to near horizon extremal Myers-Perry black hole in arbitrary dimension
    A.Galajinsky, A.Nersessian and A.Saghatelian
    JHEP 1306,002 (2013) arXiv:1303.4901 [hep-th]

  5. Defects, Super-Poincare line bundle and Fermionic T-duality
    S.Elitzur, B.Karni, E.Rabinovici and G.Sarkissian
    JHEP 04, 088 (2013) arXiv:1301.6639 [hep-th]

  6. The Coulomb problem on a 3-sphere and Heun polynomials,
    S.Bellucci and V.Yeghikyan,
    J.Math.Phys. 54 (2013) 082103 arXiv:1302.0798 [hep-th]

  7. Explicit harmonic and spectral analysis in Bianchi I-VII-type cosmologies,
    Zh. Avetisyan, R. Verch,
    Classical and Quantum Gravity, 30 (2013) 155006 arXiv:1212.6180 [math-ph]

  8. Isospin particle systems on quaternionic projective spaces.
    S.Bellucci, S.Krivonos, A.Nersessian, V.Yeghikyan
    Phys.Rev. D 87(2013), 045005
    arXiv:1212.1663 [hep-th]

  9. Correlation functions in one-dimensional spin lattices with Ising and Heisenberg bonds
    Stefano Bellucci, Vadim Ohanyan
    Eur. Phys. J. B86, 446 (2013) arXiv:1211.7358

  10. Baxter operators with deformed symmetry
    D.Chicherin, S. Derkachov, D. Karakhanyan, R. Kirschner
    Nuclear Physics B, 868(2013), 3, 652-683.
    arXiv:1211.2965

  11. Exact description of the magnetoelectric effect in the spin-1/2 XXZ-chain with Dzyaloshinskii-Moriya interaction
    A.Klümper, M.Brockmann, V.Ohanyan
    Phys. Rev. B 87(2013), 054407
    arXiv:1210.7693

  12. New solutions to the slq(2)-invariant Yang-Baxter equations at roots of unity: cyclic representations
    D. Karakhanyan, Sh. Khachatryan
    Nuclear Physics B, 868(2013), 1, 328–349
    arXiv:1203.6528

2012

  1. Near-horizon dynamics of particle in extreme Reissner-Nordström and Clément-Gal'tsov black hole backgrounds: action-angle variables
    A. Saghatelian
    Classical and Quantum Gravity 29 (2012) 245018, [arXiv:1205.6270v1][hep-th]

  2. Action-angle variables and novel superintegrable systems
    T.Hakobyan, O.Lechtenfeld, A.Nersessian, A.Saghatelian and V.Yeghikyan
    Physics of Particles and Nuclei, 43 (2012) 577–582
    Proc. of Workshop on Supersymmetries and Quantum Symmetries, Dubna, 18-23 July 2011
    DOI: 10.1134/S1063779612050152

  3. Constants of Motion of the Four-Particle Calogero Model
    A. Saghatelian
    Physics of Atomic Nuclei, 75, 10 (2012) 1288-1293
    DOI: 10.1134/S1063778812100171

  4. Magnetocaloric effect in spin-1/2 $XX$ chains with three-spin interactions
    M.Topilko, T.Krokhmalskii, O.Derzhko, V.Ohanyan
    The European Physical Journal B 85, 8 (2012) 278, [arXiv:1205.0727]

  5. Magneto-thermal properties of the Heisenberg-Ising orthogonal-dimer chain with triangular XXZ-clusters
    V.Ohanyan, A.Honecker
    Phys.Rev.B 86 (2012),054412, [arXiv:1203.4741]

  6. Action-angle variables for the particle near extreme Kerr throat
    S.Bellucci, A.Nersessian and V.Yeghikyan
    Mod.Phys.Lett. A 27(2012) 1250191 [arXiv:1112.4713]

  7. The spherical sector of the Calogero model as a reduced matrix model
    T. Hakobyan, O. Lechtenfeld and A. Nersessian
    Nucl. Phys. B 858 (2012), 250-266 [arXiv:1110.5352][hep-th]

  8. Integrable generalizations of oscillator and Coulomb systems via action-angle variables
    T. Hakobyan, O. Lechtenfeld, A. Nersessian, A.Saghatelian and V. Yeghikyan
    Phys.Lett. A 376 (2012) 679-686 [arXiv:1108.5189] [hep-th]

  9. Some remarks on D-branes and defects in Liouville and Toda field theories
    G.Sarkissian
    Internation Journal of Modern Physics A 27 (2012) 1250181, arXiv:1108.0242 [hep-th]

  10. Reductions related with Hopf maps
    V.Yeghikyan
    Phys.Atom.Nucl. 75, 1487-1491, [arXiv:1101.4299](2012)
    Proc.of XV Int.Conference on Symmetry Methods in Physics, Tsakhkadzor, Armenia, 16-22 August, 2010

2011

  1. Conformal mechanics inspired by extremal black holes in d=4
    A.Galajinsky and A.Nersessian
    JHEP 1111, 135 (2011) [arXiv:1108.3394] [hep-th]

  2. Differential Geometry in DNA molecules
    S. Bellucci, Y. Mamasakhlisov and A. Nersessian
    Nanoscience & Nanotechnology Letters 3, (2011) 922-926
    Proceedings of Conference on Nanoscience & Nanotechnology,
    20-23.09.2010, Frascati, Italy
    DOI: 10.1166/nnl.2011.1244

  3. On canonical quantization of the gauged WZW model with permutation branes
    G. Sarkissian
    Int. J. Mod. Phys. A 26, 4647-4660 (2011). [arXiv:1102.4950] [hep-th]

  4. External field influence on semiflexible macromolecules: geometric coupling
    S. Bellucci, Ye. Mamasakhlisov, A. Nersessian
    Mod. Phys. Lett. B 25, 1809-1819 (2011) [arXiv:1011.0644]

  5. Hopf maps and Wigner's little groups
    R. Mkrtchyan, A. Nersessian and V. Yeghikyan
    Mod. Phys. Lett. A 26, 1393-1405  (2011) [arXiv:1008.2589][hep-th]

  6. Invariants of the spherical sector of conformal mechanics
    T. Hakobyan, O. Lechtenfeld, A. Nersessian and A. Saghatelian
    J. Phys. A 44, 055205 (2011) [arXiv:1008.2912 [hep-th]]

  7. Quantum ring models and action-angle variables
    S. Bellucci, A. Nersessian, A. Saghatelian and V. Yeghikyan
    J. Comp. Theor. Nanoscience, 8 769-775 (2011) [arXiv:1008.3865] [cond-mat.mtrl-sci].

  8. Exactly solvable model of Ising-Heisenberg diamond-chain with S=1 XXZ vertical dimers with
    additional biquadratic interactions and single-ion anisotropy
    O. Rojas, S. M. de Souza, V. Ohanyan, M. Khurshudyan
    Phys. Rev. B 83, 094430 (2011)  arXiv:1007.0098 [cond-mat]

  9. Defects in G/H coset, G/G topological field theory and discrete Fourier-Mukai transform.
    G.Sarkissian
    Nucl.Phys. B846 (2011) 338-357 [arXiv:1006.5317][hep-th]


2010

  1. Action-angle variables for dihedral systems on the circle
    O. Lechtenfeld, A. Nersessian and V. Yeghikyan
    Phys. Lett. A374(2010) 46474652 [arXiv:1005.0464][hep-th]

  2. Normalized division *-algebras and Hopf brations
    V. Yeghikyan,
    Mathematics in Higher School 4, 1, 14-21 (2010) (in Armenian)

  3. Ordering of energy levels for SU(N) extended Habbard chain
    T. Hakobyan
    SIGMA 6 024 (2010) [arXiv:1003.2147][cond-mat]

  4. Exact calculation of the magnetocaloric e ect in the S=1/2 XXZ chain
    C.Trippe, A.Klümper, A. Honecker and V. Ohanyan
    Phys. Rev. B81, 054402 (2010) [arXiv:0912.5428][cond-mat]

  5. Lattice distortions in sawtooth chain with Heisenberg and Ising bonds
    S. Bellucci and V. Ohanyan
    Eur. Phys. J. B75, 531 (2010) [arXiv:0908.3594][cond-mat]

  6. Hidden symmetries of integrable conformal mechanical systems
    T. Hakobyan, S. Krivonos, O. Lechtenfeld and A. Nersessian
    Phys. Lett. A 374(2010), 801-806 [arXiv:0908.3290]

  7. Energy level ordering for frustrated spin ladder models
    T. Hakobyan,
    Phys. Atom. Nucl.73, 2 (2010), 339-344
    Proc. of XXVII Colloquim on Group-theoretical methods in Physics, 11-17.08.2008, Yerevan
    DOI: 10.1134/S1063778810020213

  8. Phase diagrams of the Ising-Heisenberg chain with S=1/2 triangular XXZ clusters
    V. Ohanyan,
    Phys. Atom. Nucl. 73 , 3(2010), 494 [arXiv:0812.0127]
    Proc. of XXVII Colloquim on Group-theoretical methods in Physics, 11-17.08.2008, Yerevan

  9. Multi-center spherical oscillator and Calogero model
    V. Yeghikyan,
    Phys. Atom. Nucl. 73 3 (2010), 579-582
    Proc. of XXVII Colloquim on Group-theoretical methods in Physics, 11-17.08.2008, Yerevan
    DOI: 10.1134/S1063778810030208

  10. Second Hopf map and 5d Yang-Coulomb system on speudosphere and sphere
    S. Bellucci, F. Toppan and V. Yeghikyan
    J. Phys. A43 045205 (2010) [arXiv:0905.3461][hep-th]

  11. Higher-derivative Lagrangians for spinning light
    D. Aghamalyan and A. Nersessian
    Phys. Atom. Nucl. 73, 2 (2010), 247-250
    Proc. of XXVII Colloquim on Group-theoretical methods in Physics, 11-17.08.2008, Yerevan
    DOI: 10.1134/S1063778810020079

  12. Generalizations of MICZ-Kepler system
    A. Nersessian
    Phys. Atom. Nucl., 73, 3 (2010), 489-493 [arXiv:0711.1037]
    Proc. of XXVII Colloquim on Group-theoretical methods in Physics, 11-17.08.2008, Yerevan



2009

  1. Energy level ordering for the quantum mechanical system with interacting SU(N) fermions
    T. Hakobyan
    Proceedings of International Advansed research Workshop on Modern problems in optics and photonics (27 August-2 September 2009, Yerevan, Armenia).
    Ed. G.Yu.Kryuchkyan, A.V.Papoyan, D.A.Antonosyan, 53-58, "Gitutun" Publ., Yerevan, 2010

  2. Antiferromagnetic sawtooth chain with Heisenberg and Ising bonds
    V. Ohanyan
    Condensed Matter Physics, 12(2009), 343-351 [arXiv:0905.4776][cond-mat]

  3. "Second Hopf map and supersymmetric mechanics with Yang monopole"
    M. Gonzales, Zh. Kuznetsova, A. Nersessian, F. Toppan and V. Yeghikyan
    Phys. Rev. D80(2009) 025022 [arXiv:0902.2682]

  4. Remarks on multi-dimensional conformal mechanics
    C. Burdík and A. Nersessian
    SIGMA 5 (2009), 004 [arXiv:0901.1644]
    Proc. of XVII Colloquium on Integrable Systems and Quantum Symmetries, Prague, 19-21 June, 2008

  5. "Cuboctahedric Higgs oscillator from the Calogero model"
    T. Hakobyan, A. Nersessian and V. Yeghikyan
    J. Phys. A42(2009), 205206 [arXiv:0808.0430]

  6. "Lobachevsky geometry of (super)conformal mechanics"
    T. Hakobyan and A. Nersessian
    Phys. Lett. A373 (2009), 1001-1004 [arXiv:0803.1293]


2008

  1. Exactly solvable Ising-Heisenberg chain with triangular XXZ-Heisenberg plaquettes
    D. Antonosyan, S. Bellucci and V. Ohanyan,
    Phys.Rev.B79(2008), 014432 [arXiv:0807.4300][cond-mat]

  2. Two-center quantum MICZ-Kepler system and Zeeman e ect in the charge-dyon system
    S. Bellucci and V. Ohanyan,
    Phys. Lett. A372 (2008) 5765 [arXiv:0802.1671]

  3. Multi-center MICZ-Kepler systems
    A. Nersessian and V. Ohanyan
    Theor. Math. Phys. 155 (2008), 618-626 [arXiv:0705.0727]
    Talk given at the Conference on Classical and Quantum Integrable Systems Dubna, Russia, 24-28 January, 2007.

  4. Antiferromagnetic ordering of energy levels for spin ladder with four-spin cyclic exchange
    T. Hakobyan
    Phys. Rev. B78, 012407 (2008)[arXiv:0802.2392]

  5. Anisotropic inharmonic Higgs oscillator and related (MICZ-)Kepler-like systems
    A. Nersessian and V. Yeghikyan
    J. Phys. A41 (2008), 155203 [arXiv:0710.5001]

  6. Hamiltonian description of the systems with Lagrangians depending on extrinsic curvatures on curved spaces
    D. A. Aghamalyan
    J. Contemp. Phys. 43, 261-265 (2008)
    DOI: 10.3103/S1068337208060017


2007

  1. Anisotropic Higgs oscillator
    A. Nersessian and V. Yeghikyan
    [arXiv:0711.1033],
    Proc. of Workshop on Supersymmetries and Quantum Symmetries, Dubna, July 30- August 4, 2007, Ed. E. Ivanov, S. Fedoruk, 242-246, JINR Publ.2008

  2. Reflection symmetry and energy-level ordering in frustrated ladder models
    T. Hakobyan
    Proc. of Workshop on Supersymmetries and Quantum Symmetries, (Dubna, July 30- August 4, 2007),
    Ed. E. Ivanov and S. Fedoruk, 283-286, JINR Publ., 2008

  3. "N=4 Supersymmetric MICZ-Kepler systems on S3"
    S. Bellucci, S. Krivonos and V. Ohanyan
    Phys. Rev. D 76, 105023 (2007) [arXiv:0706.1469 [hep-th]]

  4. Multi-center MICZ-Kepler system, supersymmetry and integrability.
    S. Krivonos, A. Nersessian and V. Ohanyan
    Phys. Rev. D75(2007), 085002 (5 pages) [arXiv:hep-th/0611268]

  5. Energy-level ordering and ground-state quantum numbers for a frustrated two-leg spin-1/2
    ladder
    T. Hakobyan
    Phys. Rev. B, 75, 214421 (2007) [arXiv:cond-mat/0702148]

  6. Relationship between quantum mechanical systems with and without monopoles
    L. Mardoyan, A. Nersessian and A.Yeranyan
    Phys. Lett. A366 (2007), 30-35 [arXiv:hep-th/0610301]

  7. Dipole transitions and Stark e ect in the charge-dyon system
    L. Mardoyan, A. Nersessian, H. Sarkisyan and V. Yeghikyan
    J. Phys. A40 (2007), 5973-5980 [arXiv:cond-mat/0609768]

  8. "An exact solution on the ferromagnetic Face-Cubic spin model on a Bethe lattice "
    V. R. Ohanyan, L. N. Ananikyan and N. S. Ananikian,
    Physica A377, 501-513 (2007) [arXiv:cond-mat/0610534]