@article{01821316, title = {Subgroups of quasi-HNN groups.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {731-743}, doi = {10.1155/S0161171202103012}, zbl = {1034.20021}, language = {en}, url = {http://dml.mathdoc.fr/item/01821316} }
Mahmood, R. M. S.; Khanfar, M. I. Subgroups of quasi-HNN groups.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 731-743. doi : 10.1155/S0161171202103012. http://gdmltest.u-ga.fr/item/01821316/