N.  Kirchgeßner, Spies, H., Scharr, H., and Schurr, U., ?Root Growth Analysis in Physiological Coordinates?, in International Conference on Image Analysis and Processing (ICIAP'01), 2001.

N.  Kirchgeßner, Spies, H., Scharr, H., and Schurr, U., ?Root Growth Measurements in Object Coordinates?, in Proceedings of the 23th DAGM Symposium on Pattern Recognition, 2001.