José A. Malpica María C. Alonso María A. Sanz Dempster-Shafer Theory in geographic information systems: A survey. 47-55 2007 32 Expert Syst. Appl. 1 http://dx.doi.org/10.1016/j.eswa.2005.11.011 db/journals/eswa/eswa32.html#MalpicaAS07