Roberto Sebastiani and Paolo Giorgini and John Mylopoulos16th International Conference on Advanced Information Systems Engineering, volume3084ofLecture Notes in Computer Science, page20-35. Riga, Latvia, June2004.
Jane Cleland-Huang and Raffaella Settimi and Oussama BenKhadra and Eugenia Berezhanskaya and Selvia ChristinaInternational Conference on Software Engineering, page362--371. St. Louis, MO, USA, ACM, (2005)
Bruno González-Baixauli and Julio Cesar Sampaio do Prado Leite and Miguel A. LagunaInternational Conference on Requirements Engineering, page347-348. Minneapolis, Minnesota, IEEE Computer Society, (2006)
M. S. Feather and Stephen Fickas and Axel van Lamsweerde and C. PonsardNinth IEEE International Workshop on Software Specification and Design (IWSSD-9), page50--59. Isobe, JP, April1998.
H. Liu and H. Lieberman and T. SelkerAH '02: Proceedings of the Second International Conference on Adaptive Hypermedia and Adaptive Web-Based Systems, page253--263. London, UK, Springer-Verlag, (2002)