Contraction and Treewidth Lower Bounds
Journal of Graph Algorithms and Applications 10 (2006), no. 1, 5--49.
BibTex references
@Article\{BWK06,
author = "Bodlaender, Hans L. and Wolle, T. and Koster, Arie M.C.A.",
title = "Contraction and Treewidth Lower Bounds",
journal = "Journal of Graph Algorithms and Applications",
number = "1",
volume = "10",
pages = "5--49",
year = "2006",
note = "http://jgaa.info/accepted/2006/BodlaenderWolleKoster2006.10.1.pdf",
}