1. Alvarez, L., Guichard, F., Lions, P. L. and Morel, J. M.: Axiomes et equations fondamentales du traitement d'images,C.R. Acad. Sci. Paris 315 (1992), 135?138.
2. Alvarez, L., Guichard, F., Lions, P. L. and Morel, J. M.: Axiomatisation et nouveaux operateurs de la morphologie mathematique,C.R. Acad. Sci. Paris 315 (1992), 265?268.
3. Alvarez, L., Lions, P. L. and Morel, J. M.: Image selective smoothing and edge detection by nonlinear diffusion,SIAM J. Numer. Anal. 29 (1992), 845?866.
4. Angenent, S., Sapiro, G. and Tannenbaum, A.: On the affine heat flow for non-convex curves, MIT-LIDS Internal, Report, March 1994.
5. Babaud, J., Witkin, A. P., Baudin, M. and Duda, R. O.: Uniqueness of the Gaussian kernel for scale-space filtering,IEEE Trans. Pattern Anal. Machine Intell. 8 (1986) 26?33.