%0 Journal Article
%A Sun, Juntao
%A Chu, Jifeng
%T Necessary and sufficient conditions for the existence of periodic solution to singular problems with impulses
%J Electronic Journal of Differential Equations
%D 2014
%V 2014
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a38/
%G en
%F EJDE_2014__2014__a38