by DROBOT DMITRIJ V,SU, LOVCHINOVSKIJ IGOR YU,SU, BUSHUEV YURIJ G,SU, BELOV SERGEJ F,SU, KOZLOVA VALENTINA A,SU, MALYSHEVA EKATERINA B,SU, IGUMNOV MIKHAIL S,SU, VINOGRADOVA LARISA V,SU
Year of Publication 23.09.1981