1. M.R. Anderberg, Cluster Analysis and Applications, Academic Press, 1973.
2. T.A. Feo and M.G.C. Resende, Greedy Randomized Adaptive Search Procedure, Journal of Global Optimization 2 (1995) 1–27.
3. L. Kaufman and P.J. Rousseeuw, Finding Groups in Data. An Introduction to Cluster Analysis. Wiley, 1990.
4. J.M. Peña, J.A. Lozano, and P. Larrañaga, An empirical comparison of four initialization methods for the K-Means algorithm. Pattern Recognition Letters 20 (1999) 1027–1040.
5. S. Theodoridis and K. Koutroumbas, Pattern Recognition. Academic Press, 1999.