@article{GDZPPN002094916, title = {Function Fileds of Pfister Forms.}, journal = {Inventiones mathematicae}, volume = {55}, year = {1979}, pages = {61-76}, zbl = {0395.10028}, url = {http://dml.mathdoc.fr/item/GDZPPN002094916} }
Lam, T.Y.; Elman, R.; Wadsworth, A.R. Function Fileds of Pfister Forms.. Inventiones mathematicae, Tome 55 (1979) pp. 61-76. http://gdmltest.u-ga.fr/item/GDZPPN002094916/