(NoSNOWY KOMBINATORNOJ TOPOLOGII (B/s - (NpONTRQGIN(B, (NlEW sEMENOWI^s ((NlENINGRAD (B;s (NmOSKWA (B:s (NgOSTEHIZDAT(B. (NlENINGR(B. (NOTD(B-(NNIE(B,s, 1947)
Keywords: (NtOPOLOGIQs