Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Baum, Paul F E-mail: https://www.mathnet.ru/eng/person98076 List of publications on Google Scholar Publications in Math-Net.Ru Citations 2014 1. Paul F. Baum, Piotr M. Hajac, “Local Proof of Algebraic Characterization of Free Actions”, SIGMA, 10 (2014), 060, 7 pp.         3 Organisations Institute of Mathematics of the Polish Academy of Sciences Department of Mathematics, Pennsylvania State University