1. L. Cánovas, P. Fernández, B. Pelgrín. Algoritmos en grafos y redes. Editorial PPU, Murcia, 1995. C. L. Liu. Elementos de Matemáticas Discretas. McGraw Hill, 1995. G. Y. Handler, P. B. Mirchandani. Location in networks: Theory and algorithms, MIT Press, Cambridge, Massachusetts, 1979.
2. Network and Discrete Location
3. Optimum Locations of Centers in Networks
4. R. F. Love, J. G. Morris, G. O. Wesolowsky. Facilities location: Models & methods, North Holland, New York, 1988.
5. The Centers and Medians of a Graph