(NmATEMATI^ESKIE RABOTY (B/s - (NnX@TON(B, (NiSAAKs; (NmORDUHAJ(B-(NbOLTOWSKOJ(B, (Nd(B.(Nd(B.s ((NlENINGRAD (B;s (NmOSKWA (B:s (Nonti(B,s, 1937)
Keywords: (NmATEMATIKAs