@article{1077375780, author = {Leavitt, W. G.}, title = {The module type of homomorphic images}, journal = {Duke Math. J.}, volume = {32}, number = {1}, year = {1965}, pages = { 305-311}, language = {en}, url = {http://dml.mathdoc.fr/item/1077375780} }
Leavitt, W. G. The module type of homomorphic images. Duke Math. J., Tome 32 (1965) no. 1, pp. 305-311. http://gdmltest.u-ga.fr/item/1077375780/