by SADOVNIKOV YURIJ M,SU, IVASHKEVICH VIKTOR P,SU, JOSIFOV KOSTADIN JOSIFOVICH,BG, ERLYKIN IVAN I,SU, OSIPOVA GALINA S,SU, BOGDANOV PETR ATANASOVICH,BG, MAKSIMOV VADIM YA,SU, MAVLYUDOV MARAT A,SU, PEREVERZEV VADIM N,SU, FISHER ELEONORA A,SU
Year of Publication 23.09.1986