(NiSSLEDOWANIQ PO TOPOLOGII I GEOMETRII (B:s (NsBORNIK NAU^NYH TRUDOW (B/s - (NbORUBAEW(B, (Na(B.(Na(B.s ((NmOSKWA (B:s (Nb(B. (NI(B.,s, 1985)
Keywords: (NtRIGONOMETRIQs