Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1981__36_141264, author = {J\"urgen R\"atz}, title = {Zur {Charakterisierung} des {Skalarprduktes.}}, journal = {Elemente der Mathematik}, pages = {94--96}, publisher = {mathdoc}, volume = {36}, year = {1981}, url = {http://geodesic.mathdoc.fr/item/ELMA_1981__36_141264/} }
Jürgen Rätz. Zur Charakterisierung des Skalarprduktes.. Elemente der Mathematik, Tome 36 (1981), pp. 94-96. http://geodesic.mathdoc.fr/item/ELMA_1981__36_141264/