(NiNDEKSY (B/ s - (NpLO[KO(B, (NbORIS gERASIMOWI^(B. s ((NlENINGRAD (B: s (NiZD(B-(NWO lENINGR(B. (NUN(B-(NTA(B, s, 1958)
Keywords: (NiNDEKSY (B((NSTAT(B.)s