Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Frid, I A https://www.mathnet.ru/eng/person40480 List of publications on Google Scholar https://mathscinet.ams.org/mathscinet/MRAuthorID/445786 Publications in Math-Net.Ru Citations 1956 1. I. A. Frid, “On the stability of solutions of a linear differential equation with retardation in the critical case”, Uch. Zap. Mosk. Gos. Univ., 181 (1956),  73–82