1. Lecture Notes in Computer Science;J. Dowling,2001
2. Hürsch, W., Lopes, C.V.: Separation of concerns. Technical Report NU-CCS-95-03, Northeastern University, Boston, Massachusetts (1995)
3. Coupaye, T.: Éric Bruneton, Stéfani, J.B.: The fractal composition framework. Technical report, The ObjectWeb Group (2002)
4. Lecture Notes in Computer Science;B. Redmond,2002
5. The First International Workshop on Unanticipated Software Evolution. In: ECOOP 2002, Malaga, Spain (2002), http://www.joint.org/use2002