%0 Journal Article %A Philos, CH. G. %A Purnaras, I. K. %A Sficas, Y. G. %T Oscillations in Higher-Order Neutral Differential Equations %J Canadian journal of mathematics %D 1993 %P 132-158 %V 45 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-008-6/ %R 10.4153/CJM-1993-008-6 %F 10_4153_CJM_1993_008_6