Remote Sensing and Geographical Information Systems for Environmental Studies : Proceedings of the 1st Goettingen GIS and Remote Sensing Days Goettingen, 7-8 October 2004, / Ed. by C. Kleinn, C. Kleinn, J. Nieschulze and B. Sloboda. Goettingen : Universität Trier, 2004. Vol. 2 Pp. 116-126