Institution: | (1) Institute of Thermophysics, Siberian Branch of the Academy of Sciences of the USSR, SU-630090 Novosibirsk, USSR;(2) Present address: Institute of Theoretical Physics, Academy of Sciences of the USSR, SU-142432 Chernogolovka, Moscow district, USSR;(3) Present address: Moscow Physics and Engineering Institute, Kirov str., 21, Moscow, USSR |