(NtEOREMA kABLUKOWA (B/s - (NpOLI]UK(B, (NwALERIJ rOMANOWI^s ((NmOSKWA (B:s (NzNANIE(B,s, 1983)
Keywords: (NkABLUKOW(B, (NiWAN aLEKSEEWI^s; (NhIMI^ESKAQ NAUKA W sssr (B- (NiSTORIQs