Rocha, U., 		Ramos, N., 		Melo, L., 		Benedito, M., 		Silva, A., 		Cano, R., 		Miyazawa, F., & 		Xavier, E.
2017 Jul  2.  Heuristic Approaches for the p-Hub Median Problem with Facility Location. Proceedings of  the Theory of Computation Meeting (ETC). [Online] :