D. Bonura, R. Culmone, and E. Merelli. SEKE '02: Proceedings of the 14th international conference on Software engineering and knowledge engineering, page 739--746. New York, NY, USA, ACM Press, (2002)
S. Rugaber. ROA '06: Proceedings of the 2006 international workshop on Role of abstraction in software engineering, page 11--18. New York, NY, USA, ACM Press, (2006)