@article{IM_1991__105_3_143928,
     author = {S.M. Gersten and H. Short},
     title = {Small cancellation theory and automatic groups: {Part} {II.}},
     journal = {Inventiones mathematicae},
     pages = {641--662},
     publisher = {mathdoc},
     volume = {105},
     number = {3},
     year = {1991},
     zbl = {0734.20014},
     url = {http://geodesic.mathdoc.fr/item/IM_1991__105_3_143928/}
}