@article{1102945289, author = {Ware, Roger}, title = {When are Witt rings group rings?}, journal = {Pacific J. Math.}, volume = {49}, number = {2}, year = {1973}, pages = { 279-284}, language = {en}, url = {http://dml.mathdoc.fr/item/1102945289} }
Ware, Roger. When are Witt rings group rings?. Pacific J. Math., Tome 49 (1973) no. 2, pp. 279-284. http://gdmltest.u-ga.fr/item/1102945289/