%0 Journal Article %A Elabbasy, E. %A Hassan, T. %A Saker, S. %T Necessary and Sufficient Condition for Oscillations of Neutral Differential Equation %J Serdica Mathematical Journal %D 2005 %P 279-290 %V 31 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2005_31_4_a1/ %G en %F SMJ2_2005_31_4_a1