M. A. Kreines, E. A. Morozova, N. N. Chentsov, “XIII Moscow School Mathematical Competition”, Uspekhi Mat. Nauk, 1950, Volume 5, Issue 5(39),Pages <nobr>204

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Uspekhi Mat. Nauk, 1950 Volume 5, Issue 5(39), Pages 204–207 (Mi rm8486)

Mathematical Events in the USSR

XIII Moscow School Mathematical Competition

M. A. Kreines, E. A. Morozova, N. N. Chentsov