%% -*-BibTeX-*- @TechReport{JaWe00, author = "J. Janssen and T. Wentzell", title = "Lower Bounds from Tile Covers for the Channel Assignment Problem", number = "G-2000-09", institution = "GERAD, HEC", address = "Montreal, Canada", year = "2000", URL = "http://www.mscs.dal.ca/~janssen/cv/publications.html", language = "English", }