Schmitt, Klaus A note on periodic solutions of second order ordinary differential equations. (English) Zbl 0238.34073 SIAM J. Appl. Math. 21, No. 1-2, 491-494 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 6 Documents MSC: 34C25 Periodic solutions to ordinary differential equations 34B15 Nonlinear boundary value problems for ordinary differential equations 34A40 Differential inequalities involving functions of a single real variable PDFBibTeX XMLCite \textit{K. Schmitt}, SIAM J. Appl. Math. 21, 491--494 (1971; Zbl 0238.34073) Full Text: DOI