by NAGLAND YULO P,SU, KHALLING YULO A,SU, DEMIDOVA ELVIRA S,SU, CHELISHCHEV NIKOLAJ V,SU, IVANOV SERGEJ V,SU, PROTSAJLO MIKHAIL YA,SU, POLFEROV KIRILL YA,SU, SEMENOV ANDREJ N,SU, ALFEROV YURIJ A,SU, MAJSTE LEMBIT A,SU
Year of Publication 30.08.1977