1. Channel link density and ground slope;Abrahams;Annals of the Association of American Geographers,1980
2. AGIV, 2001a. Tertiary geological map of Belgium. Digital file.
3. AGIV, 2001b. Soil map of Belgium. Digital file.
4. AGIV, 2004. Landbouwgebruikspercelen, toestand 01/01/2004, Vlaamse Landmaatschappij — afdeling Mestbank. Digital file.
5. AGIV, 2006. Orthophoto colour 1: 12 000, GIS Oost-Vlaanderen, Provincie Oost-Vlaanderen, AGIV.