Ließ, M.; Schmidt, J. & Glaser, B. (2016): Improving the spatial prediction of soil organic carbon stocks in a complex tropical mountain landscape by methodological specifications in machine learning approaches. PLOS ONE 11(4), 1-22.
Ließ, M. (2015): Sampling for regression-based digital soil mapping: Closing the gap between statistical desires and operational applicability. Spatial Statistics 13, 106-122.