@article{1102971636, author = {Krom, Melven and Krom, Myren}, title = {Groups with free nonabelian subgroups.}, journal = {Pacific J. Math.}, volume = {35}, number = {3}, year = {1970}, pages = { 425-427}, language = {en}, url = {http://dml.mathdoc.fr/item/1102971636} }
Krom, Melven; Krom, Myren. Groups with free nonabelian subgroups.. Pacific J. Math., Tome 35 (1970) no. 3, pp. 425-427. http://gdmltest.u-ga.fr/item/1102971636/