(NiWAN pAWLOWI^ pOHITONOW (B/s - (NgREBEN@K(B, (NwALENTIN aLEKSANDROWI^s ((NlENINGRAD (B:s (NhUDOVNIK rsfsr(B,s, 1973)
Keywords: (NpOHITONOW(B, (NiWAN pAWLOWI^s; (NvIWOPISXs