by RYZHONKOV,DMITRY I.,SU, STEPNOV,SERGEI A.,SU, ARABEI,BORIS G.,SU, SOPOCHKIN,SERGEI A.,SU, PRONIN,LEV A.,SU, KOSTYREV,SERGEI B.,SU, ESIKMAN,VLADIMIR L.,SU, KOLGIN,ALEXANDR P.,SU, MINTS,ALEXANDR S.,SU, VASILIEV,ANDREI V.,SU
Year of Publication 05.09.1990