Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_1997_11_3-4_a7, author = {B. Mond and J.E. Pecarich}, title = {On {Schhwarz's} {Inequality} in {Hilbert} {Space}}, journal = {Mathematica balkanica}, pages = {269}, publisher = {mathdoc}, volume = {11}, number = {3-4}, year = {1997}, url = {http://geodesic.mathdoc.fr/item/MABA_1997_11_3-4_a7/} }
B. Mond; J.E. Pecarich. On Schhwarz's Inequality in Hilbert Space. Mathematica balkanica, Tome 11 (1997) no. 3-4, p. 269. http://geodesic.mathdoc.fr/item/MABA_1997_11_3-4_a7/