1. Lu, F., Milios, E.E.: Optimal Spline Fitting to Planar Shape. Elsevier Signal Processing 37, 129–140 (1994)
2. Loncaric, S.: A Survey of Shape Analysis Techniques. Pattern Recognition 31(8), 983–1001 (1998)
3. Rabiner, L., Juang, B.H.: Fundamentals of Speech Recognition. Prentice Hall, Englewood Cliffs (1993)
4. Briceño, J.C., Travieso, C.M., Ferrer, M.A.: Automatic Recognition of Simple Laurisilva Canariensis Leaves, by Perimeter Characterization. In: IASTED International Conference on Signal Processing, Pattern Recognition and its Applications, pp. 249–254 (2002)
5. Springer Series in Statistics;I.T. Jolliffe,2002