TY  - JOUR
AU  - Kapovich, Ilya
AU  - Lustig, Martin
TI  - Geometric intersection number and analogues of the curve complex for free groups
JO  - Geometry & topology
PY  - 2009
SP  - 1805
EP  - 1833
VL  - 13
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.2140/gt.2009.13.1805/
DO  - 10.2140/gt.2009.13.1805
ID  - GT_2009_13_3_a13
ER  -