1. Ashley, K. (1990). Modeling Legal Argument. MIT Press.
2. Aleven, V. (1997). Teaching Case Based Argumentation Through an Example and Models. Ph.D. thesis, University of Pittsburgh, Pittsburgh, PA, USA.
3. Bredeweg B., Struss P. (2004). Current topics in qualitative reasoning. AI Magazine 24:13–16, special issue on Qualitative Reasoning.
4. Breuker, J. and Hoekstra, R. (2004a). Core Concepts of Law: Taking Common-sense Seriously. In: Proceedings of Formal Ontologies in Information Systems, FOIS-2004. IOS-Press.
5. Breuker, J. and Hoekstra, R. (2004b). DIRECT: Ontology based Discovery of Responsibility and Causality in Legal Case Descriptions. In: Gordon, T. (ed.), Legal Knowledge and Information Systems. Jurix 2004: The Seventeenth Annual Conference. Amsterdam, 59–68, IOS Press.