1. Arias-Castro, E., & Donoho, D. L. (2009). Does median filtering truly preserve edges better than linear filtering? Annals of Statistics, 37(3), 1172–1206.
2. Barrett, H. H., & Myers, K. J. (2004). Foundations of image science. Wiley-Interscience, NJ: Pure and Applied Optics.
3. Gonzalez, R. C., & Woods, R. E. (1992). Digital image processing. MA: Addison-Wesley.
4. Goudail, F., & Réfrégier, P. (2003). Statistical image processing techiques for noisy images: an application-oriented approach. Kluwer: New York.
5. Huber, P. J. (1981). Robust statistics. New York: Wiley.