Geodesic
Disjoint Homotopic Paths and Trees in a Planar Graph.
Discrete & computational geometry, Tome 6 (1991) no. 4, pp. 527-574.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Mots-clés : planar graph embedded, homotopic trees, polynomial-time algorithm, disjoint trees problem 
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     author = {A. Schrijver},
     title = {Disjoint {Homotopic} {Paths} and {Trees} in a {Planar} {Graph.}},
     journal = {Discrete & computational geometry},
     pages = {527--574},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1991},
     zbl = {0755.05033},
     url = {http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131173/}
}
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A. Schrijver. Disjoint Homotopic Paths and Trees in a Planar Graph.. Discrete & computational geometry, Tome 6 (1991) no. 4, pp. 527-574. http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131173/