@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/