TY  - JOUR
AU  - Wing-Sum Cheung
TI  - On Opial-type inequalities in two varaiables.
JO  - Aequationes mathematicae
PY  - 1989
SP  - 236
EP  - 244
VL  - 38
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1989__38_1_137330/
ID  - AM2_1989__38_1_137330
ER  -