%0 Journal Article %A Grace, Said R. %T Oscillation of even order nonlinear functional differential equations with deviating arguments %J Mathematica slovaca %D 1991 %P 189-204 %V 41 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1991__41_2_a6/ %G en %F MASLO_1991__41_2_a6