1. Duffin, P.H. (ed). Knowledge Based Systems: Applications in Administrative Government. Ellis Horwood, 1988.
2. Bratley, P., Femont, J., MacKaay, E. and Poulin, D. Coping With Change. Proceedings of the 3rd International Conference on AI and Law, Oxford, ACM Press, pp 53–61, 1991.
3. Bench-Capon, T.J.M and Coenen, F.P. Practical Application of KBS to Law: The Crucial Role of Maintenance. In van Noortwijk, C., Schmidt, A.H.J., Winkels, R.G.F. Legal Knowledge Based Systems, Aims for Research and Development. Koninklijke Vermande BV, Lelystadt, Netherlands, p5-17, 1991.
4. Bench-Capon, T.J.M. and Coenen, F. The Make Project: Maintenance Tools For Knowledge Based Systems. In Liebowitz, J. (1991). Expert Systems World Congress Proceedings, Volume 2, Pergamon Press, p 1030-1036, 1991.
5. Sergot, M.J., Sadri, F., Kowalski, R.A., Kriwaczek, F., Hammond, P. and Cory, H. T. The British Nationality Act as a Logic Program. Communications ACM, Vol. 29, No. 5, pp 370–386, 1983.