@article{1250181473, author = {Fitzgerald, R.W.}, title = {Ideal class groups of Witt rings}, journal = {Rocky Mountain J. Math.}, volume = {19}, number = {4}, year = {1989}, pages = { 683-686}, language = {en}, url = {http://dml.mathdoc.fr/item/1250181473} }
Fitzgerald, R.W. Ideal class groups of Witt rings. Rocky Mountain J. Math., Tome 19 (1989) no. 4, pp. 683-686. http://gdmltest.u-ga.fr/item/1250181473/