00254nam a2200109Ia 4500082001900000100002900019245005200048260002400100300001000124500000500134700000500139  a530.1bB624.EM  aBitsatze, A. V. d auth.  aEquation of mathematical physics (in Russian)b  aMockbebNAUKAc1982  a336p.  a  a