(NwYDA@]IJSQ U^ENYJ nIKOLAJ iWANOWI^ mUSHELI[WILI (B:s (Nk (B80-(NLETI@ SO DNQ ROVDENIQ (B/s - (NgUSEJNOW(B, (Na(B.(Ni(B.s; (NaKADEMIQ NAUK aZssrs ((NbAKU (B:s (N|LM(B,s, 1971)
Keywords: (NmUSHELI[WILI(B, (NnIKOLAJ iWANOWI^s; (NmEHANIKAs; (Nu^ENYE W sssrs