%0 Journal Article
%A Changxiu Song
%T Positive periodic solutions of
 functional differential equations with infinite delay
%J Annales Polonici Mathematici
%D 2008
%P 75-83
%V 93
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap93-1-6/
%R 10.4064/ap93-1-6
%G en
%F 10_4064_ap93_1_6