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JOURNALS // Doklady Akademii Nauk // Archive

Dokl. Akad. Nauk SSSR, 1972 Volume 203, Number 5, Pages 1008–1010 (Mi dan36827)

This article is cited in 1 paper

MATHEMATICS

On the problem of distinguishing between a center and a focus

S. D. Shchuko

Gorky Institute of Water Transport Engineers

UDC: 517.925

Presented: I. G. Petrovskii
Received: 29.09.1971



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