TY  - JOUR
AU  - A. Schrijver
TI  - Disjoint Homotopic Paths and Trees in a Planar Graph.
JO  - Discrete & computational geometry
PY  - 1991
SP  - 527
EP  - 574
VL  - 6
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131173/
ID  - DCG_1991__6_4_131173
ER  -