Red-blue covering problems and the consecutive ones property.

Michael Dom Jiong Guo Rolf Niedermeier Sebastian Wernicke Red-blue covering problems and the consecutive ones property. 393-407 2008 6 J. Discrete Algorithms 3 http://dx.doi.org/10.1016/j.jda.2007.11.002 db/journals/jda/jda6.html#DomGNW08