Some applications of a simple criterion for the existence of periodic solutions of ordinary differential equations

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS

10.1016/0022-247X(74)90215-7

WOS:A1974U287800005

http://hdl.handle.net/20.500.11767/86302

info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-49549158967

https://www.sciencedirect.com/science/article/pii/0022247X74902157?via%3Dihub

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