G. Trentham, and H. Scholl. HICSS '08: Proceedings of the Proceedings of the 41st Annual Hawaii International Conference on System Sciences, page 197. Washington, DC, USA, IEEE Computer Society, (2008)
D. Rosca, S. Greenspan, M. Feblowitz, and C. Wild. Requirements Engineering, 1997., Proceedings of the Third IEEE International Symposium on, (January 1997)