1. S. Easterbrook, E. Yu, J. Aranda, Y. Fan, J. Horkoff, M. Leica, R.A. Qadir, Do viewpoints lead to better conceptual models? An exploratory case study, in: Proceedings of the 13th IEEE International Requirements Engineering Conference (RE’05), IEEE Computer Society, 2005, pp. 199–208.
2. B. Nuseibeh, J. Kramer, A. Finkelstein, ViewPoints: meaningful relationships are difficult!, in: Proceedings of International Conference on Software Engineering (ICSE’03). Invited Paper, IEEE Computer Society Press, Portland, Oregon, USA, 2003, pp. 676–681.
3. Viewpoints: principles, problems and a practical approach to requirements engineering;Sommerville;Annals of Software Engineering,1997
4. J.C.S.P. Leite. Viewpoints on viewpoints, in: A. Finkelstein, G. Spanoudakis (Eds.), Joint Proceedings of the SIGSOFT’96 Workshops, Presented at Viewpoints 96: International Workshop on Multiple Perspectives in Software Development, ISBN 0-89791-867-3, San Francisco, USA, 1996, pp. 285–288.
5. L. Cholvy, A. Hunter, Information fusion in logic: a brief overview, in: Proceedings of the European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU’97), Vol. 1244 of Lecture Notes in Computer Science, Springer, Bad Honnef, Germany, 1997, pp. 86–95.