Dynamical zeta functions, Nielsen theory and Reidemeister torsion A Fel'shtyn Memoirs of the American Mathematical Society 147 (699), 146 pages, 2000 | 99* | 2000 |

The Reidemeister zeta function with applications to Nielsen theory and a connection with Reidemeister torsion A Fel'shtyn, R Hill K-theory 8 (4), 367-393, 1994 | 92 | 1994 |

Reidemeister number of any automorphism of a Gromov hyperbolic group is infinite A Fel'shtyn Journal of Mathematical Sciences 119 (1), 117-123, 2004 | 66 | 2004 |

The Reidemeister number of any automorphism of a Baumslag-Solitar group is infinite A Fel’shtyn, DL Gonçalves Progress in Mathematics 265, 399-414, 2007 | 59* | 2007 |

Twisted conjugacy classes in saturated weakly branch groups A Fel’shtyn, Y Leonov, E Troitsky Geometriae Dedicata 134 (1), 61-73, 2008 | 46* | 2008 |

Twisted Burnside-Frobenius theory for discrete groups A Fel'shtyn, E Troitsky Journal für die reine und angewandte Mathematik (Crelle's Journal) 613, 193-210, 2007 | 43* | 2007 |

Twisted Burnside theorem for type II_1 groups: an example A Fel'shtyn, E Troitsky, A Vershik Mathematical Research Letters 13 (5), 719-728, 2006 | 34 | 2006 |

The Nielsen zeta function VB Pilyugina, AL Fel'shtyn Functional Analysis and Its Applications 19 (4), 300-305, 1985 | 34* | 1985 |

Twisted conjugacy classes in R. Thompson's group F C Bleak, A Fel'shtyn, D Goncalves Pacific Journal of Mathematics 238 (1), 1-6, 2008 | 32 | 2008 |

A twisted Burnside theorem for countable groups and Reidemeister numbers A Fel’shtyn, E Troitsky Noncommutative Geometry and Number Theory, 141-154, 2006 | 31 | 2006 |

New directions in Nielsen–Reidemeister theory A Fel'shtyn Topology and its Applications 157 (10), 1724-1735, 2010 | 30 | 2010 |

Geometry of Reidemeister classes and twisted Burnside theorem A Fel'shtyn, E Troitsky J. of K-Theory 2, 463-506, 2008 | 30 | 2008 |

Reidemeister number of equivariant maps A Fel'shtyn, R Hill, P Wong Topology and its Applications 67, 119 - 131, 1995 | 30 | 1995 |

The Nielsen and Reidemeister numbers of maps on infra-solvmanifolds of type (R) A Fel'shtyn, JB Lee Topology and its Applications 181, 62 -103, 2015 | 28* | 2015 |

New zeta functions for dynamical systems and Nielsen fixed point theory AL Fel’shtyn Lecture Notes in Mathematics; Topology and geometry—Rohlin Seminar 1346, 33-55, 1988 | 27 | 1988 |

New zeta function in dynamic AL Fel’shtyn Tenth Internat. Conf. on Nonlinear Oscillations, Varna, Abstracts of Papers …, 1984 | 26 | 1984 |

Twisted conjugacy classes in symplectic groups, mapping class groups and braid groups (with an appendix written jointly with Francois Dahmani) A Fel’shtyn, DL Gonçalves Geometriae Dedicata 146 (1), 211-223, 2010 | 25* | 2010 |

Aspects of the property R∞ A Fel'shtyn, E Troitsky Journal of Group Theory 18 (6), 1021-1034, 2015 | 24 | 2015 |

The R∞ and S∞ properties for linear algebraic groups A Fel'shtyn, T Nasybullov Journal of Group Theory 19 (5), 901 - 921, 2016 | 21 | 2016 |

Twisted conjugacy classes in residually finite groups A Fel'shtyn, E Troitsky arXiv preprint arXiv:1204.3175, 2012 | 17 | 2012 |