Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Tkachev, Vl F https://www.mathnet.ru/eng/person35029 List of publications on Google Scholar https://mathscinet.ams.org/mathscinet/MRAuthorID/553604 Publications in Math-Net.Ru Citations 1960 1. V. F. Tkachev, V. F. Tkachev, “Criteria for nonexistence of arbitrary and of multiple limit cycles”, Mat. Sb. (N.S.), 52(94):3 (1960),  811–822