Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Zefirov, I V https://www.mathnet.ru/eng/person19561 List of publications on Google Scholar https://mathscinet.ams.org/mathscinet/MRAuthorID/633486 ISTINA https://istina.msu.ru/workers/1474215 Publications in Math-Net.Ru Citations 1997 1. I. V. Zefirov, “Commuting algebraic correspondences and groups”, Mat. Zametki, 61:5 (1997),  662–670      ; Math. Notes, 61:5 (1997), 553–560   Organisations Lomonosov Moscow State University