Andrew J. C. Blyth, J. Chudge, John E. Dobson, Ros Strens. A framework for modelling evolving requirements. In Seventeenth Annual International Computer Software and Applications Conference, COMPSAC 1993, Proceedings, Phoenix, AZ, USA, 1-5 November, 1993. pages 83-89, IEEE, 1993. [doi]
Abstract is missing.