1. Berners-Lee, T. (1999). Weaving the web: The original design and ultimate destiny of the world wide web by the inventor. San Francisco.
2. Cyber-Physical Systems. (2008). Program announcements & information. The national science foundation. 4201 Wilson Bouleward, Arlington, Virginia 22230, USA. (2008-09-30).
3. Embrechts, P., Klüppelberg, C., & Mikosch, T. (2003). Modeling extremal events for insurance and finance (4th ed.). Springer: Berlin.
4. Gershenfeld, N. (1998). The nature of mathematical modeling. Cambridge: Cambridge University Press.
5. Goodwin, R. M. (1990). Chaotic economic dynamics. Oxford: Clarendon Press.