TY  - JOUR
AU  - Shum, D. T.
TI  - A General and Sharpened form of Opial's Inequality
JO  - Canadian mathematical bulletin
PY  - 1974
SP  - 385
EP  - 389
VL  - 17
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-071-5/
DO  - 10.4153/CMB-1974-071-5
ID  - 10_4153_CMB_1974_071_5
ER  -