Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AM2_1989__38_1_137330, author = {Wing-Sum Cheung}, title = {On {Opial-type} inequalities in two varaiables.}, journal = {Aequationes mathematicae}, pages = {236--244}, publisher = {mathdoc}, volume = {38}, number = {1}, year = {1989}, zbl = {0684.26006}, url = {http://geodesic.mathdoc.fr/item/AM2_1989__38_1_137330/} }
Wing-Sum Cheung. On Opial-type inequalities in two varaiables.. Aequationes mathematicae, Tome 38 (1989) no. 1, pp. 236-244. http://geodesic.mathdoc.fr/item/AM2_1989__38_1_137330/