by BUCHINSKIJ YAROSLAV V,SU, STOLYAROV ALEKSANDR A,SU, DEMCHUK LYUBOMIR B,SU
Year of Publication 15.09.1981

by DUDA MIKHAIL A,SU, STOLYAROV ALEKSANDR A,SU, DUDA ROMAN A,SU, DEMCHUK LYUBOMIR B,SU
Year of Publication 15.03.1983