Victor Sousa Lobo Fernando Bação Miguel Loureiro Density Based Fuzzy Membership Functions in the Context of Geocomputation. 542-549 2007 conf/iccS/2007-2 International Conference on Computational Science (2) http://dx.doi.org/10.1007/978-3-540-72586-2_80 db/conf/iccS/iccS2007-2.html#LoboBL07