by GASPARYAN ASHOT YU,SU, GASPARYAN YURIJ A,SU, GASPARYAN BAGRAT YU,SU, CHUDINOV YURIJ M,SU, VORONOV KONSTANTIN G,SU, MARGARYAN SAMVEL A,SU, OGANESYAN GRACHIK G,SU
Year of Publication 30.12.1990