Quantification of Soil Variables in a Heterogeneous Soil Region With VIS-NIR-SWIR Data Using Different Statistical Sampling and Modeling Strategies. - Michael Vohland; Monika Harbich; Marie Ludwig; Christoph Emmerling; Sören Thiele-Bruhn (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2016)