%0 Journal Article %A Liu, Haifeng %A Li, Qiaoluan %T Asymptotic behavior of second-order impulsive differential equations %J Electronic Journal of Differential Equations %D 2011 %V 2011 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a25/ %G en %F EJDE_2011__2011__a25