@article{GDZPPN002439476, title = {u-invariants of fields of characteristic 2.}, journal = {Mathematische Zeitschrift}, volume = {207}, year = {1991}, pages = {335-348}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002439476} }
Wadsworth, A.R.; Mammone, P.; Moresi, R. u-invariants of fields of characteristic 2.. Mathematische Zeitschrift, Tome 207 (1991) pp. 335-348. http://gdmltest.u-ga.fr/item/GDZPPN002439476/