(NsOBRANIE TRUDOW(B/s (Nt(B. 3. (N~(B. 2,s (NmATEMATIKAs - (NkRYLOW a(B. (Nn(B.s; (NkRYLOW(B, (Na(B. (Nn(B.s ((Nm(B. ; (Nl(B.:s (NiZD(B-(NWO aKADEMII nAUK sssrs, 1949)