%0 Journal Article
%A Wing-Sum Cheung
%T On Opial-type inequalities in two varaiables.
%J Aequationes mathematicae
%D 1989
%P 236-244
%V 38
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1989__38_1_137330/
%F AM2_1989__38_1_137330