1. Anderson, J.A., Rosenfeld, E. (Eds.) (1988): Neurocomputing: Foundations of Research. MIT Press, Cambridge
2. Bishop, C.M. (1995): Neural Networks for Pattern Recognition. Clarendon-Press, Oxford
3. Davison, M.L. (1983): Multidimensional Scaling. John Wiley and Sons, New York
4. Fayyad, U., Uthurusamy, R. (1996): Data Mining and Knowledge Discovery in Databases. Communications of the ACM 39, 24–27
5. Carey, M.R.., Johnson, D.S. (1979): Computers and Intractability: A Guide to the Theory of NP-Completeness. W.H. Freeman and Company, New York