层级群集

Mirkin, B.(1996) Mathematical Classification and Clustering, Nonconvex Optimization and Its Applications Volume 11, Pardalos, P. and Horst, R., editors, Kluwer Academic Publishers, The Netherlands.

Sneath, P., Sokal, R. R.(1973) Numerical taxonomy, Second Edition, W. H.Freeman, San Francisco。

关于群集的一般信息

Hair, J.F.Jr., Anderson, R.E., Tatham, R.L., Black, W.C.(1995) Multivariate Data Analysis, Fourth Edition, Prentice Hall, Englewood Cliffs, New Jersey.