Geodesic
Visibility Graphs of Staircase Polygons and the Weak Bruhat Order, I: from Visibility Graphs to Maximal Chains.
Discrete & computational geometry, Tome 14 (1995) no. 3, pp. 331-358.

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Mots-clés : staircase polygons, simple polygon, visibility graph, persistency, adjacency matrix, maximal chains, weak Bruhat order, polynomial-time algorithm, persistent graphs 
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     author = {K. Kumar and J. Abello and O. Egecioglu},
     title = {Visibility {Graphs} of {Staircase} {Polygons} and the {Weak} {Bruhat} {Order,} {I:} from {Visibility} {Graphs} to {Maximal} {Chains.}},
     journal = {Discrete & computational geometry},
     pages = {331--358},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1995},
     zbl = {0835.05065},
     url = {http://geodesic.mathdoc.fr/item/DCG_1995__14_3_131406/}
}
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K. Kumar; J. Abello; O. Egecioglu. Visibility Graphs of Staircase Polygons and the Weak Bruhat Order, I: from Visibility Graphs to Maximal Chains.. Discrete & computational geometry, Tome 14 (1995) no. 3, pp. 331-358. http://geodesic.mathdoc.fr/item/DCG_1995__14_3_131406/