@article{GDZPPN00210895X, title = {Small cancellation theory and automatic groups: Part II.}, journal = {Inventiones mathematicae}, volume = {104}, year = {1991}, pages = {641-662}, zbl = {0734.20014}, url = {http://dml.mathdoc.fr/item/GDZPPN00210895X} }
Gersten, S.M.; Short, H. Small cancellation theory and automatic groups: Part II.. Inventiones mathematicae, Tome 104 (1991) pp. 641-662. http://gdmltest.u-ga.fr/item/GDZPPN00210895X/