by STEPANYANTS SUREN A,SU, GUBANOVA VALENTINA A,SU, MOROKA MELANIYA M,SU, CHUKHRIENKO SERGEJ ,SU, KOPELMAN ISAAK R,SU, RAVIKOVICH RAKHIL S,SU, SHESTOPALOVA VALENTINA YA,SU, SHESTOPALOV VADIM ,SU, ZHILENKO DIANA D,SU, VINOGRADOV TEODOR L,SU
Year of Publication 30.06.1980