Treewidth is a lower bound on graph gonality

van Dobben de Bruyn, Josse; Gijswijt, Dion

Algebraic Combinatorics, Volume 3 (2020) p. 941-953

Clique partitioning of interval graphs with submodular costs on the cliques

Gijswijt, Dion; Jost, Vincent; Queyranne, Maurice

RAIRO - Operations Research - Recherche Opérationnelle, Volume 41 (2007) p. 275-287