7Markus Blaschka, Carsten Sapia, Gabriele Hiffling, et al. Finding Your Way through Multidimensional Data Models[Z]. 1998.
8Alan Strahler. New Approaches to Classification in Remote Sensing Using Homogeneous and Hybrid Decision Trees to Map Land Cover[Z]. 1992 .
9Torill Hamre Nansen. Integrating Remote Sensing [ A]. In Situand Model Data in a Marine Information System (MIS) [ C ].Environmental and Remote Sensing Center Edvard Griegsvei,1996.