@article{3060, author = {Khambadkone, Meera}, title = {A radical for free groups}, journal = {Portugaliae mathematica}, volume = {42}, year = {1983}, pages = {337-342}, zbl = {0585.20028}, mrnumber = {0836113}, language = {en}, url = {http://dml.mathdoc.fr/item/3060} }
Khambadkone, Meera. A radical for free groups. Portugaliae mathematica, Tome 42 (1983) pp. 337-342. http://gdmltest.u-ga.fr/item/3060/