by KIDANOV IVAN I,SU, NEMKIN EDUARD M,SU, KRYACHKO ALEKSANDR V,SU
Year of Publication 07.11.1981

by NEMKIN EDUARD M,SU, BEJLIS BORIS A,SU, OROBINSKIJ VALENTIN S,SU, PEVZNER BORIS YA,SU, LYAKHOVER LIDIYA M,SU
Year of Publication 15.11.1982