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// Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika
// Archive
Izv. Vyssh. Uchebn. Zaved. Mat.,
1964
Number 6,
Pages
116–122
(Mi ivm2461)
The nature of conditions for a center
N. V. Medvedev
Omsk
Received:
10.06.1963
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Steklov Math. Inst. of RAS
, 2026
Fulltext:
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