%0 Journal Article
%A A. Schrijver
%T Disjoint Homotopic Paths and Trees in a Planar Graph.
%J Discrete & computational geometry
%D 1991
%P 527-574
%V 6
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131173/
%F DCG_1991__6_4_131173