(NsOBRANIE SO^INENIJ (B/s - (NaLEKSANDR mIHAJLOWI^ lQPUNOWs; (NaKADEMIQ nAUK sssrs ((NmOSKWA (B:s (NiZD(B-(NWO aKAD(B. (NNAUK sssr (B,s, 1959)
(Nt(B. 3 (1959, 374 (NS(B.)s
Keywords: (NfIZIKAs; (NmATEMATIKAs