"b-Coloring is NP-hard on co-bipartite graphs and polytime solvable on tree-cographs" (2014) Bonomo, F.;Schaudt, O.;Stein, M. (
...)Associacao Portuguesa de Investigacao Operacional; de Lisboa, Centro de Investigacao Operacional; Faculdade de Ciencias da Universidade; Fundacao para a Ciencia e a Tecnologia; Instituto Nacional de Estatistica; Universite Paris-Dauphine, LAMSADE 3rd International Symposium on Combinatorial Optimization, ISCO 2014. 8596 LNCS:100-111
10.1007/978-3-319-09174-7_9
paper_03029743_v8596LNCS_n_p100_Bonomo