1. Balduccini, M.: Modules and signature declarations for a-prolog: Progress report. In: Workshop on Software Engineering for Answer Set Programming (SEA 2007), pp. 41–55 (2007)
2. Lecture Notes in Computer Science;M. Banda de la,2006
3. Lecture Notes in Computer Science;C. Baral,2006
4. Lecture Notes in Computer Science;S. Baselice,2005
5. Brewka, G., Eiter, T.: Equilibria in heterogeneous nonmonotonic multi-context systems. In: Proceedings of the 22nd National Conference on Artificial Intelligence, vol. 1, pp. 385–390. AAAI Press, Menlo Park (2007)