MIZUTA, M. K-means Method for Functional Data. Bulletin of the International Statistical Institute, 54th Session. 2003
RAMSAY, J. O. Functional Data Analysis. 1997
TOKUSHIGE, S. Dissimilarity and Related Methods for Functional Data. Proceeding of the International Conference on New Trends in Computational Statistics with Biomedical Applications, 2001. 2001, 295-302