1. Anderson Consulting, Battling churn to increase shareholder value: wireless challenge for the future, Anderson Consulting Research Report (2000).
2. C. Bounsaythip, E.R. Runsala, Overview of data mining for customer behavior modeling, VTT Information Technology Research Report, June 2001 (2001).
3. N.S. Cardell, M. Golovnya, D. Steinberg, Churn modeling for mobile telecommunications: winning the Duke/NCR Teradata Center for CRM competition (2003), Available at: [PDF format file].
4. M. Dittenbach, D. Merkl, and A. Rauber, The Growing Hierarchical Self-Organizing Map, In: Proceedings of The International Joint Conference on Neural Networks (IJCNN 2000), 2000, pp. 15–19.
5. M. Dittenbach, A. Rauber, The Growing Self-Organizing Map (GHSOM) – introduction and architecture (2000). Available at: .