@article{1028998434, author = {Pierce, R. S.}, title = {Subrings of simple algebras.}, journal = {Michigan Math. J.}, volume = {7}, number = {1}, year = {1960}, pages = { 241-243}, language = {en}, url = {http://dml.mathdoc.fr/item/1028998434} }
Pierce, R. S. Subrings of simple algebras.. Michigan Math. J., Tome 7 (1960) no. 1, pp. 241-243. http://gdmltest.u-ga.fr/item/1028998434/