1. Adelson, Edward H.; Simoncelli, Eero P. Subband Image Coding with Three-tap pyramids. Picture Coding Symposium 1990, Cambridge MA. (EPIC-Code ftp://vhitechapel.media.mit.edu/pub/epic.tar.Z)
2. Aurich, Volker; Weule, Jörg. Non-Linear Gaussian Filters Performing Edge Preserving Diffusion. In: Mustererkennung 1995. Springer Verlag 1995 (Reihe: Informatik Aktuell). (Proc. 17. DAGM-Symposium.)
3. Fisher, Yuval. Fractal Image Compression: Theory and Application. Springer Verlag 1994. (Code http://inlB.ucsd.edu/y/Fractals/)
4. Shepard, Donald. A two dimensional interpolation function for irregulary-spaced data. Proc. 23rd National Conference ACM, 1968, S. 517–524.
5. Weule, Jörg. Iteration nichtlinearer Gauß-Filter in der Bildverarbeitung. Dissertation Heinrich-Heine-Universität Düsseldorf 1994.