by ZAKHAROV IGOR P,SU, KUKUSH VITALIJ D,SU, BELOKURSKIJ YURIJ P,SU
Year of Publication 23.09.1985

by KUKUSH VITALIJ D,SU, BELOKURSKIJ YURIJ P,SU, BELYAVTSEV VADIM B,SU, SEREDNIJ VASILIJ P,SU
Year of Publication 15.11.1981