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// Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika
// Archive
Izv. Vyssh. Uchebn. Zaved. Mat.,
1973
Number 4,
Page 120
(Mi ivm4451)
Letter to the editors
A. P. Litvinov
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Steklov Math. Inst. of RAS
, 2024
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