1. Becker, L. B., Pereira, C. E. (2002): SIMOO-RT — An object-oriented framework for the development of real-time industrial automation systems. IEEE Trans. on Robotics and Automation 18(4): 421–430.
2. Davis, A. M. (1993): Software requirements: objects, functions, and states. Englewood Cliffs, NJ: Prentice Hall.
3. Ebner, G., Kaindl, H. (2002): Tracing all around in reengineering. IEEE Software, May/June 2002: 70–77.
4. INCOSE (2000): Systems Engineering Handbook, Vers. 2.0. International Council on Systems Engineering, Seattle, WA, July 2000.
5. Jacobson, I., Booch, G., Rumbaugh, J. (1999): The unified software development process. Reading, MA: Addison-Wesley.