%0 Journal Article
%A Yankson, Ernest
%T Positive periodic solutions for second-order neutral differential equations with functional delay
%J Electronic Journal of Differential Equations
%D 2012
%V 2012
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a37/
%G en
%F EJDE_2012__2012__a37