Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1991__41_3_a3, author = {Czogala, Alfred}, title = {Witt equivalence of quadratic extensions of global fields}, journal = {Mathematica slovaca}, pages = {251--256}, publisher = {mathdoc}, volume = {41}, number = {3}, year = {1991}, mrnumber = {1126661}, zbl = {0766.11022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1991__41_3_a3/} }
Czogala, Alfred. Witt equivalence of quadratic extensions of global fields. Mathematica slovaca, Tome 41 (1991) no. 3, pp. 251-256. http://geodesic.mathdoc.fr/item/MASLO_1991__41_3_a3/