@unpublished{TUW-121093, author = {Dorigo, Wouter and Schneider, Thomas and Richter, Rolf}, title = {Image based canopy characterization by RTM inversion of imaging spectrometer data: the CRASh approach}, year = {2007}, note = {invited; talk: Workshop on ''Crop Drought Stress Monitoring by Remote Sensing'', Wien; 2007-11-30} }