@article{GDZPPN002112841, title = {Canonical representatives and equations in hyperbolic groups.}, journal = {Inventiones mathematicae}, volume = {121}, year = {1995}, pages = {489-512}, zbl = {0845.57002}, url = {http://dml.mathdoc.fr/item/GDZPPN002112841} }
Rips, E.; Sela, Z. Canonical representatives and equations in hyperbolic groups.. Inventiones mathematicae, Tome 121 (1995) pp. 489-512. http://gdmltest.u-ga.fr/item/GDZPPN002112841/