1. Bezdek J, Ehrlich R, Full W (1984) FCM: the fuzzy c means clustering algorithm. Comput Geosci 10:191–203
2. Böhner J, Antonić O (2009) Chapter 8 Land-Surface Parameters Specific to Topo-Climatology. In: Hengl T, Reuter H (ed) Geomorphometry: concepts, software, applications. Vol. 33 of Developments in soil science, Elsevier, pp 195-226
3. Böhner J, Conrad O (2007) System for automated geoscientific analyses, software, version 2.08. SAGA User Group Association, Hamburg
4. Böhner J, Koethe R, Conrad O, Gross J, Ringeler A, Selige T (2002) Soil regionalisation by means of terrain analysis and process parameterisation. In: Micheli E, Nachtergaele F, Jones R, Montanarella L (eds) Soil classification 2001. European Soil Bureau, Hungary, pp 213–222
5. Breiman L (1996) Random forests. Mach Learn 24:123–140