1. A. Witkin, ?Scale Space Filtering,? in PROC. INT. JOINT CONF. ARTIF. INTELL., Karlsruhe, FRG, 1983, pp. 1019?1021.
2. L.R. Rabiner and R.W. Schafer, DIGITAL PROCESSING OF SPEECH SIGNALS. Prentice-Hall: Englewood Cliffs, NJ, 1978.
3. D. Sankoff and J.B. Kruskal (eds.), TIME WARPS, STRING EDITS AND MACROMOLECULES: THE THEORY AND PRACTICE OF SEQUENCE COMPARISON. Addison-Wesley: Reading, MA, 1983.
4. W.E.L. Grimson, ?An implementation of a computational theory of visual surface interpolation,? COMPUT. VISION, GRAPHICS, IMAGE PROCESSING vol. 22, pp. 39?69, 1983.
5. D. Terzopoulos, ?Multilevel computational processes for visual surface reconstruction,? COMPUT. VISION, GRAPHICS, IMAGE PROCESSING vol. 24 pp. 52?96, 1983.