by ZORIN IVAN S,SU, TOPCHA ARKADIJ G,SU, SERGET ALEKSANDR V,SU, SAVENKO SERGEJ G,SU, SHEJNIN LEONID S,SU, TEPLITSKIJ ABRAM KH,SU, SAVCHENKO SERGEJ V,SU, PUKHACHEV VLADIMIR M,SU
Year of Publication 15.07.1991