(NdIFFERENCIALXNOE IS^ISLENIE (B:s (Nu^EBNOE POSOBIE DLQ WUZOW (B/s - (NlUZIN(B, (NnIKOLAJ nIKOLAEWI^s ((NmOSKWA (B:s (NsOWETSKAQ NAUKA(B,s, 1958)
(NpRILOV(B.: (NS(B. 455-469s
Keywords: (NwYS[AQ MATEMATIKAs; (NdIFFERENCIALXNOE IS^ISLENIEs