TY - JOUR AU - Ivan Dynnikov AU - Bert Wiest TI - On the complexity of braids JO - Journal of the European Mathematical Society PY - 2007 SP - 801 EP - 840 VL - 9 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4171/jems/98/ DO - 10.4171/jems/98 ID - JEMS_2007_9_4_a7 ER -