1. Arias, I.: Proxemics in the ESL Classroom. Forum 34(1), Costa Rica (1996)
2. Burstedde, C.K., Klauck, K., Schadschneider, A., Zittartz, J.: Simulation of Pedestrian Dynamics using a 2-dimensional Cellular Automaton. Phys. Rev. A 295, 507–525 (2001)
3. Dijkstra, J., Jessurun, A.J., Timmermans, H.: A Multi-Agent Cellular Automata System for Visualising Simulated Pedestrian Activity. In: Proceedings of ACRI, pp. 29–36 (2000)
4. Lecture Notes in Artificial Intelligence;E. Dudek–Dyduch,2006
5. Geisler, L.: Doctor and patient – a partnership through dialogue. Pharma Verlag, Frankfurt (1991)