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Branching of periodic solutions of autonomous systems and of differential equations in Banach spaces. (English. Russian original) Zbl 0184.18101

Sov. Math., Dokl. 8, 1013-1017 (1967); translation from Dokl. Akad. Nauk SSSR 176, 9-12 (1967).

MSC:

34C25 Periodic solutions to ordinary differential equations
34G10 Linear differential equations in abstract spaces