1. Heckel, R., Wagner, A.: Ensuring consistency of conditional graph grammars – a constructive approach. In: SEGRAGRA 1995. ENTCS, vol. 2, pp. 95–104 (1995)
2. Koch, M., Mancini, L.V., Parisi-Presicce, F.: Graph-based specification of access control policies. Journal of Computer and System Sciences 71, 1–33 (2005)
3. Ehrig, H., Ehrig, K., Habel, A., Pennemann, K.H.: Theory of constraints and application conditions: From graphs to high-level structures. Fundamenta Informaticae 74(1), 135–166 (2006)
4. Habel, A., Pennemann, K.H.: Correctness of high-level transformation systems relative to nested conditions. In: Mathematical Structures in Computer Science (to appear, 2008)
5. Azab, K., Habel, A.: High-level programs and program conditions (long version). Technical report, University of Oldenburg (2008)