1. P. A. Arbeláez L. D. Cohen The Extrema Edges. In Griffin, L. D. and Lillholm, M., editors, Scale-Space , volume 2695 of Lecture Notes in Computer Science , pages 180-195. Springer, (2003).
2. P. Bille Report on Known Algorithm for Tree Matching. Technical report, Deliverable No.5, DSSCV, IST-2001-35443, (2003).
3. J. Damon Local Morse Theory for Gaussian Blurred Functions. In Sporring, J., Nielsen, M., Florack, L., and Johansen, P., editors, Gaussian Scale-Space Theory , chapter 11, pages 147-163. Kluwer Academic Publishers, Dordrecht, The Netherlands (1997).
4. Basic theory on normalization of a pattern (in case of typical one-dimensional pattern);Iijima;Bulletin of Electrotechnical Laboratory,1962
5. P. Johansen S. Skelboe K. Grue J. Andersen Representing signals by their toppoints in scale space. In Haton, J.-P., editor, Proceedings of the 8th International Conference on Pattern Recognition , Paris, France. IEEE Computer Society Press, (1986).