by AKIMOV YURIJ M,SU, NIKOLAJKIN IVAN ,SU, KOLENOV YURIJ ,SU, ZIMIN PETR N,SU
Year of Publication 30.07.1977

by KOLENOV YURIJ I,SU, OSIPOV YURIJ O,SU, GURIN LEONID YA,SU
Year of Publication 07.01.1983