1. Boers, E., Kuiper, H.: Biological Metaphors and the Design of Modular Artificial Neural Networks. Departments of Computer Science and Experimental and Theoretical Psychology at Leiden University, the Netherlands (1992)
2. Brock, W.A., Hsieh, D.A., LeBaron, B.: Nonlinear Dynamics, Chaos and Instability. MIT Press, Cambridge (1991)
3. Castillo, O., Melin, P.: Automated Mathematical Modelling for Financial Time Series Prediction using Fuzzy Logic, Dynamical System Theory and Fractal Theory. In: Proceedings of CIFEr’96, pp. 120–126. IEEE Computer Society Press, New York (1996)
4. Castillo, O., Melin, P.: A New Fuzzy-Genetic Approach for the Simulation and Forecasting of International Trade Non-Linear Dynamics. In: Proceedings of CIFEr’98, pp. 189–196. IEEE Computer Society Press, New York (1998)
5. Castillo, O., Melin, P.: Automated Mathematical Modelling for Financial Time Series Prediction Combining Fuzzy Logic and Fractal Theory. In: Soft Computing for Financial Engineering, pp. 93–106. Springer, Heidelberg (1999)