1. A hybrid heuristic for the uncapacitated hub location problem;Abdinnour-Helm;European Journal of Operational Research,1998
2. Lagrangian relaxation based approaches to capacitated hub-and-spoke network design problem;Aykin;European Journal of Operational Research,1992
3. Integer programming formulations of discrete hub location problems;Campbell;European Journal of Operational Research,1994
4. A survey of network hub location;Campbell;Studies in Location Analysis,1994
5. Facility Location: Applications and Theory;Campbell,2002