TY  - JOUR
AU  - Mladen Bestvina
AU  - Mark Feighn
TI  - Bounding the complexity of simplicial group actions on trees.
JO  - Inventiones mathematicae
PY  - 1991
SP  - 449
EP  - 470
VL  - 103
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1991__103_1_143865/
ID  - IM_1991__103_1_143865
ER  -