Treewidth Lower Bounds with Brambles

@Article\{BGK08,

author = "Bodlaender, Hans L. and Grigoriev, A. and Koster, Arie M.C.A.",

title = "Treewidth Lower Bounds with Brambles",

journal = "Algorithmica",

volume = "51",

pages = "81--98",

year = "2008",

note = "http://dx.doi.org/10.1007/s00453-007-9056-z",

}