Haußecker, H, Tizhoosh, H R and Jähne, B (2000). Fuzzy image processing. Computer Vision and Applications - A Guide for Students and Practitioners. Academic Press. 541--576

 Haußecker, H, Tizhoosh, H R, Jähne, B, Geißler, P and Haußecker, H (1999). Fuzzy image processing. Handbook of Computer Vision and Applications. Academic Press. 2: Signal Processing and Pattern Recognition 683--727