A Twofold Fuzzy Region Model for Imprecise Quality Control of Geographic Information. - Niels Charlier; Guy De Tré; Sidharta Gautama; Rik Bellens (ICCSA (1), 2008)

Heterogeneous bipolar criteria satisfaction handling in geographical decision support systems: an LSP based approach. - Guy De Tré; Jozo J. Dujmovic; Nico Van de Weghe; Tom Matthé; Niels Charlier (SAC, 2009)

Automating Actualisation of Geographic Information Using the Twofold Fuzzy Region Model. - Niels Charlier; Guy De Tré; Sidharta Gautama; Rik Bellens (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 2010)