D. Bularas, N. I. Vulpe, K. S. Sibirskii, “The problem of the center “in the large” for a general quadratic system”, Dokl. Akad. Nauk SSSR, 1990, Volume 311, Number 4,Pages <nobr>777

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Dokl. Akad. Nauk SSSR, 1990 Volume 311, Number 4, Pages 777–780 (Mi dan6674)

MATHEMATICS

The problem of the center “in the large” for a general quadratic system

D. Bularas^ab, N. I. Vulpe^ab, K. S. Sibirskii^ab

^a Mathematics Institute, Computer Center, Academy of Sciences of the Moldavian SSR, Kishinev
^b University of Algiers

UDC: 517.925

Received: 02.01.1989

English version: Doklady Mathematics, 1990, 41:2, 287–290

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