Jia, Xiufang; Zhao, Aimin; Yan, Jurang Existence of positive periodic solutions of impulsive functional differential equations with two parameters. (Chinese. English summary) Zbl 1164.34518 Math. Pract. Theory 37, No. 23, 126-129 (2007). Summary: The aim of this paper is to consider a class of impulsive functional differential equations with two parameters. Using a fixed point theorem in a cone, sufficient conditions for the existence of positive periodic solutions of the equation are obtained, extending and improving corresponding results of the paper by J. R. Yan [J. Math. Anal. Appl. 327, No. 2, 854–868 (2007; Zbl 1114.34052)]. MSC: 34K13 Periodic solutions to functional-differential equations 34K45 Functional-differential equations with impulses Keywords:impulsive functional differential equation; positive periodic solution; fixed point theorem Citations:Zbl 1114.34052 PDFBibTeX XMLCite \textit{X. Jia} et al., Math. Pract. Theory 37, No. 23, 126--129 (2007; Zbl 1164.34518)