%0 Journal Article %A S.M. Gersten %A H. Short %T Small cancellation theory and automatic groups: Part II. %J Inventiones mathematicae %D 1991 %P 641-662 %V 105 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1991__105_3_143928/ %F IM_1991__105_3_143928