(NgOLUBAQ OZIMX (B: s (NpOWESTX (B/ s - (NnIKONOW(B, (NnIKOLAJ gRIGORXEWI^s ((NsWERDLOWSK(B:s (NsWERDLOWSK KN(B. (NIZD(B-(NWO(B,s, 1961)
Keywords: (N{KOLXNIKI W sssrs