1. Multiple criteria decision analysis: An integrated approach;Belton,2002
2. Caldwell, D. R. (2000). Extending map algebra with flag operators. In Proceedings of the fifth international conference on geocomputation.
3. Câmara, G., De Freitas, U. M., & Cordeiro, J. P. C. (1994). Towards an algebra of geographical fields. In 5th Proceedings Brazilian symposium on computer graphics and image processing, Anais, Curitiba (pp. 205–212).
4. Integrating multi-criteria evaluation with geographical information systems;Carver;International Journal of Geographical Information Systems,1991
5. Chakhar, S. (2006). Multicriteria decisional cartography: Formalization and implementation. Ph.D. thesis, University of Paris Dauphine, Paris, France.