%0 Journal Article
%A Singh, Bhagat
%T A Necessary and Sufficient Condition for the Oscillation of an Even Order Nonlinear Delay Differential Equation
%J Canadian journal of mathematics
%D 1973
%P 1078-1089
%V 25
%N 5
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-115-0/
%R 10.4153/CJM-1973-115-0
%F 10_4153_CJM_1973_115_0