1. Digital image enhancement and noise filtering by use of local statistics;Lee;IEEE Trans. Pattern Anal. Mach. Intell.,1980
2. Refined filtering of image noise using local statistics;Lee;Computer Graphics Image Processing,1981
3. T. S. Huang, ed., Two-Dimensional Digital Signal Processing II: Transforms and Median Filters, Chaps. 1, 5, 6, Springer-Verlag, New York/Heidelberg.
4. Computer techniques for geological applications;Soha,1976
5. Box filtering techniques;McDonnell;Computer Graphics Image Processing,1981