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JOURNALS
// Differentsial'nye Uravneniya
// Archive
Differ. Uravn.,
1972
Volume 8,
Number 10,
Pages
1791–1796
(Mi de1688)
Ordinary Differential Equations
Coefficient criteria for the existence of separatrix cycles for a certain quadratic equation
I. G. Rozet
A. Navoi Samarkand State University
UDC:
517.925.12
Received:
06.04.1971
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Steklov Math. Inst. of RAS
, 2024