@article{1255629649, author = {Rotman, Joseph}, title = {Torsion-free and mixed abelian groups}, journal = {Illinois J. Math.}, volume = {5}, number = {1}, year = {1961}, pages = { 131-143}, language = {en}, url = {http://dml.mathdoc.fr/item/1255629649} }
Rotman, Joseph. Torsion-free and mixed abelian groups. Illinois J. Math., Tome 5 (1961) no. 1, pp. 131-143. http://gdmltest.u-ga.fr/item/1255629649/