%0 Journal Article %A Wong, James S. W. %T A Discrete Analogue of Opial's Inequality %J Canadian mathematical bulletin %D 1967 %P 115-118 %V 10 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-013-3/ %R 10.4153/CMB-1967-013-3 %F 10_4153_CMB_1967_013_3