TY  - JOUR
AU  - Cooper, Daryl
AU  - Lackenby, Marc
AU  - Purcell, Jessica S
TI  - The length of unknotting tunnels
JO  - Algebraic and Geometric Topology
PY  - 2010
SP  - 637
EP  - 661
VL  - 10
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.2140/agt.2010.10.637/
DO  - 10.2140/agt.2010.10.637
ID  - 10_2140_agt_2010_10_637
ER  -