Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1975__142_172185, author = {Alexander Prestel}, title = {A {Local-Global} {Principle} for {Quadric} {Forms.}}, journal = {Mathematische Zeitschrift}, pages = {91--96}, publisher = {mathdoc}, volume = {142}, year = {1975}, zbl = {0287.10016}, url = {http://geodesic.mathdoc.fr/item/MZ_1975__142_172185/} }
Alexander Prestel. A Local-Global Principle for Quadric Forms.. Mathematische Zeitschrift, Tome 142 (1975), pp. 91-96. http://geodesic.mathdoc.fr/item/MZ_1975__142_172185/