G. F. Rybkin, “Scientific conference in Kazan' dedicated to 125 years from the date of discovery of the non-Euclidean geometry by N. I. Lobachevskii”, Uspekhi Mat. Nauk, 1951, Volume 6, Issue 3(43),Pages <nobr>165

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Uspekhi Mat. Nauk, 1951 Volume 6, Issue 3(43), Pages 165–170 (Mi rm6861)

Mathematical Events in the USSR

Scientific conference in Kazan' dedicated to 125 years from the date of discovery of the non-Euclidean geometry by N. I. Lobachevskii

G. F. Rybkin

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