This article is cited in 1 paper

The heritage of N. I. Lobachevskii and the activity of Kazan geometers

A. P. Norden, A. P. Shirokov

Kazan State University

UDC: 514.7

MSC: 01A70, 53A55, 53A35

Received: 13.08.1992

 English version: Russian Mathematical Surveys, 1993, 48:2, 47–74

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