1. Berkin P (2006). A survey of clustering data mining techniques. In: Kogan, J, Nicholas, C and Teboulle, M (eds) Grouping multidimensional data: recent advances in clustering, pp 25–71. Springer, Berlin
2. Bradley PS, Fayyad UM (1998) Refining initial points for K-means clustering. In: Proceedings of the 15th international conference on Machine Learning. Morgan Kaufmann, San-Fransisco, pp 91–99
3. Bojanczyk AW, Brent RP and Hoog FR (1995). Stability analysis of a general Toeplitz system solver. Numer Algorithms 10: 225–244
4. Celeux G, Chauveau D, Diebolt J (1995) On stochastic versions of the EM algorithm. INRIA research report no 2514, available http://www.inria.fr/rrrt/rr-2514.html
5. Dempster A, Laird N and Rubin D (1977). Maximum likelihood from incomplete data via the EM algorithm. J R Stat Soc B 39: 1–38