(NaNALITI^ESKAQ GEOMETRIQs - (NpOSTNIKOW(B,(Nm(B. (Nm(B.s (NmIHAIL mIHAJLOWI^s ((Nm(B.s (NnAUKAs, 1973)
Keywords: (NaNALITI^ESKAQ GEOMETRIQs