@article{1255632713, author = {Chase, Stephen U.}, title = {Locally free modules and a problem of Whitehead}, journal = {Illinois J. Math.}, volume = {6}, number = {1}, year = {1962}, pages = { 682-699}, language = {en}, url = {http://dml.mathdoc.fr/item/1255632713} }
Chase, Stephen U. Locally free modules and a problem of Whitehead. Illinois J. Math., Tome 6 (1962) no. 1, pp. 682-699. http://gdmltest.u-ga.fr/item/1255632713/