@Article{glv-2005,
  title = 	 {Branch-and-price and new testproblems for spectrum auctions},
  author = 	 {Oktay G\"unl\"uk and L\'aszl\'o Lad\'anyi  and Sven de Vries },
  journal = 	 {Manag. Sci.},
  url= {http://mansci.journal.informs.org/cgi/content/abstract/51/3/391},
  year = 	 2005,
  volume = 	 51,
  number = 	 3,
  pages = 	 {391--406}}