@article{GDZPPN002092883,
title = {Pairs of Quadratic Forms.},
journal = {Inventiones mathematicae},
volume = {34},
year = {1976},
pages = {157-164},
zbl = {0337.10015},
url = {http://dml.mathdoc.fr/item/GDZPPN002092883}
}
Waterhouse, William C. Pairs of Quadratic Forms.. Inventiones mathematicae, Tome 34 (1976) pp. 157-164. http://gdmltest.u-ga.fr/item/GDZPPN002092883/