Periodic solutions of x′' + f(x, t) = 0 via the Poincaré-Birkhoff theorem

Research output: Contribution to journalArticlepeer-review

88 Scopus citations
Original languageEnglish (US)
Pages (from-to)37-52
Number of pages16
JournalJournal of Differential Equations
Volume20
Issue number1
DOIs
StatePublished - Jan 1976
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analysis
  • Applied Mathematics

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