@article{1183511457, author = {Levi, F. W.}, title = {Pairs of inverse modules in a skewfield}, journal = {Bull. Amer. Math. Soc.}, volume = {53}, number = {12}, year = {1947}, pages = { 1177-1182}, language = {en}, url = {http://dml.mathdoc.fr/item/1183511457} }
Levi, F. W. Pairs of inverse modules in a skewfield. Bull. Amer. Math. Soc., Tome 53 (1947) no. 12, pp. 1177-1182. http://gdmltest.u-ga.fr/item/1183511457/