M.  Klar, Stybalkowski, P., Spies, H., and Jähne, B., ?A miniaturized 3-D particle-tracking velocimetry system to measure the pore flow within a gravel layer?, in Proc. 11th Int. Symp. Applications of Laser Techniques to Fluid Mechanics, 2002, p. 2.3.

C. S.  Garbe, Spies, H., and Jähne, B., ?Mixed OLS-TLS for the estimation of dynamic processes with a linear source term?, in Proceedings of the 24th DAGM Symposium on Pattern Recognition, 2002, vol. 2449, p. 463--471.

H.  Spies, Haußecker, H., and Köhler, H. - J., ?Material transport and structure changes at soil-water interfaces?, in Filters and Drainage in Geotechnical and Environmental Engineering, 2000, p. 91--97.

H.  Haußecker, Spies, H., and Jähne, B., ?Motion?, Computer Vision and Applications - A Guide for Students and Practitioners. Academic Press, p. 347--395, 2000.

H.  Haußecker, Spies, H., Jähne, B., Geißler, P., and Haußecker, H., ?Motion?, Handbook of Computer Vision and Applications, vol. 2: Signal Processing and Pattern Recognition. Academic Press, p. 309--396, 1999.