1. Alexy, R. 1978.Theorie der juristischen Argumentation. Frankfurt am Main. Suhrkamp Verlag.
2. Ashley, K.D. 1991. Reasoning with Cases and Hypotheticals in HYPO.International Journal of Man-Machine Studies 34: 753?796.
3. Ashley, K.D. & Rissland, E.L. 1988. Waiting on Weighting: A Symbolic Least Commitment Approach.Proceeding AAAI-88, 239?244. American Association for Artificial Intelligence.
4. Ashley, K.D. & Rissland, E.L. 1987. But, See, Accord: Generating Blue Book Citations in HYPO, Proceedings ofThe First International Conference on Artifical Intelligence and Law, 67?74. New York: ACM Press.
5. Barth, E.M. & Krabbe, E.C.W. 1982.From Axiom to Dialogue. New York: Walter de Gruyter, Berlin.