Liu, Xi-Lan; Zhang, Guang; Cheng, Sui Sun Existence of triple positive periodic solutions of a functional differential equation depending on a parameter. (English) Zbl 1085.34546 Abstr. Appl. Anal. 2004, No. 10, 897-905 (2004). The authors offer some criteria for the existence of triple positive periodic solutions of a class of parameterized delay differential equations by means of the Leggett-Williams fixed-point theorem. Reviewer: Mingshu Peng (Beijing) Cited in 1 ReviewCited in 3 Documents MSC: 34K13 Periodic solutions to functional-differential equations Keywords:delay differential equations; positive perioidic solutions; the Leggett-Williams fixed-point theorem PDF BibTeX XML Cite \textit{X.-L. Liu} et al., Abstr. Appl. Anal. 2004, No. 10, 897--905 (2004; Zbl 1085.34546) Full Text: DOI EuDML