%0 Journal Article %A Chuanxi, Q. %A Ladas, G. %A Yan, J. %T Oscillations of higher order neutral differential equations %J Portugaliae mathematica %D 1991 %P 291-307 %V 48 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1991__48_3_115756/ %G en %F PORMA_1991__48_3_115756