(NwARIACIONNYE METODY W TOPOLOGII (B/s - (NfOMENKO(B, (NaNATOLIJ tIMOFEEWI^s ((NmOSKWA (B:s (NnAUKA(B,s, 1982)
Keywords: (NwARIACIONNYE METODYs; (NtOPOLOGIQs