@article{00766194, title = {Isomorphism classes and derived series of certain almost-free groups.}, journal = {Experimental Mathematics}, volume = {3}, year = {1994}, pages = {255-258}, doi = {10.1080/10586458.1994.10504294}, zbl = {0837.20044}, language = {en}, url = {http://dml.mathdoc.fr/item/00766194} }
Lewis, Robert H.; Liriano, Sal. Isomorphism classes and derived series of certain almost-free groups.. Experimental Mathematics, Tome 3 (1994) pp. 255-258. doi : 10.1080/10586458.1994.10504294. http://gdmltest.u-ga.fr/item/00766194/