Theory of critical phenomena in finite-size systems: scaling and quantum effects Ĭ Brankov, DM Danchev, NS Tonchev World Scientific Publishing Company, 2000 | 361 | 2000 |

Asymptotically exact solution for the generalized Dicke model JG Brankov, VA Zagrebnov, NS Tonchev Joint Inst. for Nuclear Research, 1974 | 46 | 1974 |

Some classes of exactly soluble models of problems in Quantum Statistical Mechanics: the method of the approximating Hamiltonian NN Bogolyubov, JG Brankov, VA Zagrebnov, AM Kurbatov, NS Tonchev Russian Mathematical Surveys 39 (6), 1, 1984 | 45 | 1984 |

The Approximating Hamiltonian Method in Statistical Physics NN Bogoliubov Jr, JG Brankov, VA Zagrebnov, AM Kurbatov, NS Tonchev Bulgarian Academy of Sciences Publ.: Sophia, Bulgaria, 1981 | 43 | 1981 |

Generalized Mittag–Leffler functions in the theory of finite-size scaling for systems with strong anisotropy and/or long-range interaction H Chamati, NS Tonchev Journal of Physics A: Mathematical and General 39 (3), 469, 2005 | 40 | 2005 |

Theory of a spherical-quantum-rotors model: Low-temperature regime and finite-size scaling H Chamati, ES Pisanova, NS Tonchev Physical Review B 57 (10), 5798, 1998 | 39 | 1998 |

Quantum effects in a d-dimensional exactly solvable model for a structural phase transition NM Plakida, NS Tonchev Physica A: Statistical Mechanics and its Applications 136 (1), 176-188, 1986 | 36 | 1986 |

On the finite-size scalling equation for the spherical model JG Brankov, NS Tonchev Journal of statistical physics 52, 143-159, 1988 | 29 | 1988 |

Casimir amplitudes in a quantum spherical model with long-range interaction H Chamati, DM Danchev, NS Tonchev The European Physical Journal B-Condensed Matter and Complex Systems 14 (2 …, 2000 | 28 | 2000 |

Finite-size scaling for systems with long-range interactions JG Brankov, NS Tonchev Physica A: Statistical Mechanics and its Applications 189 (3-4), 583-610, 1992 | 27 | 1992 |

An investigation of finite-size scaling for systems with long-range interaction: The spherical model JG Brankov, NS Tonchev Journal of statistical physics 59, 1431-1450, 1990 | 22 | 1990 |

Finite-size scaling in anisotropic systems NS Tonchev Physical Review E 75 (3), 031110, 2007 | 21 | 2007 |

Exactly soluble model for structural phase transition with a Gaussian type anharmonicity S Stamenković, NS Tonchev, VA Zagrebnov Physica A: Statistical Mechanics and its Applications 145 (1-2), 262-272, 1987 | 21 | 1987 |

Exactly solvable d-dimensional model of a structural phase transition Teor NM Plakida, NS Tonchev Math. Phys.(USSR) 63, 270-279, 1985 | 20 | 1985 |

Finite-size scaling in disordered systems H Chamati, E Korutcheva, NS Tonchev Physical Review E 65 (2), 026129, 2002 | 19 | 2002 |

Finite-size scaling investigations in the quantum 4-model with long-range interaction H Chamati, NS Tonchev Journal of Physics A: Mathematical and General 33 (5), 873, 2000 | 19 | 2000 |

Critical behavior of systems with long-range interaction in restricted geometry H Chamati, NS Tonchev Modern Physics Letters B 17 (23), 1187-1205, 2003 | 18 | 2003 |

Scaling behavior for finite O (n) systems with long-range interaction H Chamati, NS Tonchev Physical Review E 63 (2), 026103, 2001 | 18 | 2001 |

Method of approximating Hamiltonian in statistical physics NN Bogolyubov Jr, JG Brankov, AM Kurbatov, NC Tonchev, ... Sophia, 1981 | 18 | 1981 |

Exact results for some Madelung-type constants in the finite-size scaling theory H Chamati, NS Tonchev Journal of Physics A: Mathematical and General 33 (19), L167, 2000 | 17 | 2000 |