@PhdThesis{gup:Luebbecke:01b,
  author =	 {M.E. L{\"u}bbecke},
  title =	 {Engine Scheduling by Column Generation},
  school =	 {Braunschweig University of Technology},
  address =	 {Cuvillier Verlag, G\"ottingen},
  isbn =	 {3-89873-178-2},
  year =	 2001
}