@article{344,
  author = {Fatma Gzara and Jean-Louis Goffin},
  title = {Exact solution of the centralized network design problem on directed graphs},
  year = {2005},
  journal = {Networks},
  volume = {45},
  number = {4},
  pages = {181-192},
  publisher = {John Wiley & Sons, Ltd},
}