@article{01714024, title = {Representing subgroups of finitely presented groups by quotient subgroups.}, journal = {Experimental Mathematics}, volume = {10}, year = {2001}, pages = {369-381}, doi = {10.1080/10586458.2001.10504457}, zbl = {1062.20037}, language = {en}, url = {http://dml.mathdoc.fr/item/01714024} }
Hulpke, Alexander. Representing subgroups of finitely presented groups by quotient subgroups.. Experimental Mathematics, Tome 10 (2001) pp. 369-381. doi : 10.1080/10586458.2001.10504457. http://gdmltest.u-ga.fr/item/01714024/