1. Royce, W.: Managing the development of large software systems: Concepts and techniques. In: 9th International Conference on Software Engineering, pp. 1–9. IEEE Westcon, Los Alamitos (1970)
2. Booch, G., Jacobson, I., Rumbaugh, J.: The rational Unified Process, an Introduction. Addison-Wesley, Reading (2000)
3. Boehm, B.: A spiral model of software development and enhancement. IEEE Computer 21, 61–72 (1988)
4. Boehm, B.: Cots integration: plug and pray? IEEE Software 32, 135–138 (1999)
5. Linger, R.: Cleanroom process model. IEEE Software 11, 50–58 (1994)