Jirí Fiala, Daniël Paulusma, Jan Arne Telle. Algorithms for Comparability of Matrices in Partial Orders Imposed by Graph Homomorphisms. In Dieter Kratsch, editor, Graph-Theoretic Concepts in Computer Science, 31st International Workshop, WG 2005, Metz, France, June 23-25, 2005, Revised Selected Papers. Volume 3787 of Lecture Notes in Computer Science, pages 115-126, Springer, 2005. [doi]
Abstract is missing.