1. Abel, P.: Description of the USU-PFR Analysis Method, Technical Report, USU GmbH, Möglingen, Germany (1995)
2. August, J.H.: Joint Application Design: The Group Session Approach to System Design. Yourdan Press, Englewood Cliffs (1991)
3. Balzer, R.: Tolerating Inconsistencies. In: 13th Intl. Conf. Software Engineering (ICSE-13), Austin, Texas, pp. 158–165 (1991)
4. Bernstein, P.A., Halevy, A.Y., Pottinger, R.A.: A vision for management of complex models. ACM SIGMOD Record 29(4), 55–63 (2000)
5. Bernstein, P.A., Melnik, S.: Model management 2.0: Manipulating richer mappings. In: ACM SIGMOD Intl. Conf. on Management of Data, Beijing, China, pp. 1–12 (2007)