(NqRLY^OK (B:s [(NpOWESTX(B] / s - (NeGOROW(B, (NiWAN qKOWLEWI^s ((NsTALINGRAD (B:s (NkN(B. (NIZD(B-(NWO(B,s, 1956)
Keywords: (NkRESTXQNSTWO W rOSSII (B((NH(B. (NL(B.)s; (NrOSSIQ (B19 (NW(B. ((NH(B. (NL(B.)s