@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/