@article{1181069332, author = {Lewallen, John A.}, title = {When Divisibility by an Element Implies Invertibility}, journal = {Rocky Mountain J. Math.}, volume = {37}, number = {2}, year = {2007}, pages = { 285-289}, language = {en}, url = {http://dml.mathdoc.fr/item/1181069332} }
Lewallen, John A. When Divisibility by an Element Implies Invertibility. Rocky Mountain J. Math., Tome 37 (2007) no. 2, pp. 285-289. http://gdmltest.u-ga.fr/item/1181069332/