by FURAZHKIN SERGEJ N,SU, SAFRONOV IVAN ,SU, FILIPPOV GEORGIJ ,SU, KOLBUN NIKOLAJ N,SU
Year of Publication 25.06.1978

by GUSKOV ANATOLIJ N,SU, MISHIN ALEKSEJ M,SU, KERSHENBAUM NAUM YA,SU, KOLBUN NIKOLAJ N,SU, KHAIT MARK B,SU
Year of Publication 07.05.1988