TY  - JOUR
AU  - Zhao Chang-Jian
AU  - Wing-Sum Cheung
TI  - On Opial-Dan's Type Inequalities
JO  - Bulletin of the Malaysian Mathematical Society
PY  - 2014
VL  - 37
IS  - 4
UR  - http://geodesic.mathdoc.fr/item/BMMS_2014_37_4_a21/
ID  - BMMS_2014_37_4_a21
ER  -