1. BAKER, F. B. and HUBERT, L. J. (1976): Measuring the power of hierarchical cluster analysis. Journal of the American Statistical Association
70, 31–38.
2. BEALE, E. M. L. (1969): Euclidean cluster analysis. Bulletin of the International Statistical Institute 43 (2), 92–94.
3. BOCK, H.-H. and DIDAY, E. (eds) (2000): Analysis of Symbolic Data, Exploratory methods for extracting statistical information from complex data. Springer Verlag.
4. BOCK, H.-H. et al. (2001): Report of the Meeting ASSO — WP6. 2 Classification group (Munich). Technical report.
5. CALINSKI, T. and HARABASZ, J. (1974): A dendrite method for cluster analysis. Communications in Statistics, 3, 1–27.