@article{GDZPPN002415607,
title = {A Local-Global Principle for Quadric Forms.},
journal = {Mathematische Zeitschrift},
volume = {142},
year = {1975},
pages = {91-96},
zbl = {0287.10016},
url = {http://dml.mathdoc.fr/item/GDZPPN002415607}
}
Prestel, Alexander. A Local-Global Principle for Quadric Forms.. Mathematische Zeitschrift, Tome 142 (1975) pp. 91-96. http://gdmltest.u-ga.fr/item/GDZPPN002415607/