1. Kaiya, H., Horai, H., Saeki, M.: AGORA: attributed goal-oriented requirements analysis method. In: Proceedings of the IEEE Joint International Conference on Requirements Engineering, pp. 13–22 (2002)
2. Kawakita, J.: KJ Method. Chuokoron-sha, Tokyo (1986)
3. van Lamsweerde, A.: Goal-oriented requirements engineering: a guided tour. In: Proceedings of the Fifth IEEE International Symposium on Requirements Engineering, pp. 249–262 (2001)
4. van Lamsweerde, A.: Requirements Engineering: From System Goals to UML Models to Software Specifications, 1st edn. Wiley Publishing, New York (2009)
5. Lecture Notes in Computer Science;C Leonardi,2011