Thickness-two graphs part one: New nine-critical graphs, permuted layer graphs, and Catlin s graphs

Debra L. Boutin, Ellen Gethner, Thom Sulanke. Thickness-two graphs part one: New nine-critical graphs, permuted layer graphs, and Catlin s graphs. Journal of Graph Theory, 57(3):198-214, 2008. [doi]

Abstract

Abstract is missing.