@article{GDZPPN002090597,
title = {Quadratic Forms and the ?-Invariant. II.},
journal = {Inventiones mathematicae},
volume = {20},
year = {1973},
pages = {125-138},
zbl = {0267.10029},
url = {http://dml.mathdoc.fr/item/GDZPPN002090597}
}
Elman, Richard; Lam, T.Y. Quadratic Forms and the ?-Invariant. II.. Inventiones mathematicae, Tome 20 (1973) pp. 125-138. http://gdmltest.u-ga.fr/item/GDZPPN002090597/