Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Ul'yanov, N B https://www.mathnet.ru/eng/person146712 List of publications on Google Scholar Publications in Math-Net.Ru Citations 1982 1. D. O. Logofet, N. B. Ul'yanov, “Necessary and sufficient conditions for sign stability of matrices”, Dokl. Akad. Nauk SSSR, 264:3 (1982),  542–546