(NkAK UPROSTITX WY^ISLENIQ (B/s - (NnEJ[ULER(B, (Nl(B.(Nq(B.s; (NaKU[SKIJ(B, (Ni(B.(Nq(B.s ((NlENINGRAD (B;s (NmOSKWA (B:s (NiZD(B-(NWO an sssr(B,s, 1938)
Keywords: (NwY^ISLITELXNAQ MATEMATIKAs