STEEL - KHARCHEVNIKOV VALERIJ P,SU; KEMENOMOST MARK L,SU; BABITSKIJ MARK S,SU; SADKOVA RAISA M,SU; ZIMIN YURIJ ,SU; NOSOCHENKO OLEG V,SU; LITVINENKO DENIS A,SU; STRUKOVA NADEZHDA S,SU; PEJRIK KHANAN ,SU; GEORGIEV MLADEN N,SU (1980)