@article{320,
  author = {Da Lu and Fatma Gzara and Samir Elhedhli},
  title = {Facility location with economies and diseconomies of scale: models and column generation heuristics},
  year = {2014},
  journal = {IIE Transactions},
  volume = {46},
  number = {6},
  pages = {585-600},
  publisher = {Taylor & Francis},
}