1. Lecture Notes in Computer Science;I. Balaban,2007
2. Lecture Notes in Computer Science;A. Bouajjani,2009
3. Lecture Notes in Computer Science;A. Bouajjani,2006
4. Calvanese, D., di Giacomo, G., Nardi, D., Lenzerini, M.: Reasoning in expressive description logics. In: Handbook of Automated Reasoning. Elsevier, Amsterdam (2001)
5. Lecture Notes in Computer Science;W. Charatonik,2010