(NgEOMETRIQ (B:s (Nu^EBNOE POSOBIE (B/s - (NaTANASQN(B, (NlEWON sERGEEWI^s ((NmOSKWA (B:s (NpROSWE]ENIE (B,s, 1973)
(N~(B. 1 (1973, 480 (NS(B., (NS ^ERT(B. )s (N~(B. 2 (1976. 447 (NS(B.)s
Keywords: (NgEOMETRIQs