%0 Journal Article %A Guo, Songbai %A Ma, Wanbiao %A Pradeep, B.G.Sampath Aruna %T Necessary and sufficient conditions for oscillation of neutral delay differential equations %J Electronic Journal of Differential Equations %D 2014 %V 2014 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a192/ %G en %F EJDE_2014__2014__a192