TY  - JOUR
AU  - Cooper, Daryl
AU  - Futer, David
AU  - Purcell, Jessica S
TI  - Dehn filling and the geometry of unknotting tunnels
JO  - Geometry & topology
PY  - 2013
SP  - 1815
EP  - 1876
VL  - 17
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.2140/gt.2013.17.1815/
DO  - 10.2140/gt.2013.17.1815
ID  - GT_2013_17_3_a12
ER  -