@article{1077475032, author = {Johnson, R. E.}, title = {Equivalence rings}, journal = {Duke Math. J.}, volume = {15}, number = {1}, year = {1948}, pages = { 787-793}, language = {en}, url = {http://dml.mathdoc.fr/item/1077475032} }
Johnson, R. E. Equivalence rings. Duke Math. J., Tome 15 (1948) no. 1, pp. 787-793. http://gdmltest.u-ga.fr/item/1077475032/