1. Corby, O., Blackboard architectures in computer aided design. Civ Eng Systems. Vol. 4. pp 14–19/1986.
2. Coyne, R. F. And Subrahamin, Computer supported creative design: a pragmatic approach, In Gero, J. S. & Mäher, M. L. (eds), Modelling creativity and knowledge-based creative design, Lawrence Erlbaum, USA, 1993.
3. Crouch, A. G. D., Bridge aesthetics-a sociological approach, Civ. Eng Trans, Inst. Engs. Aust., CE16(2), 138–142/1973.
4. Huang, G. K. And Brandon, J. A., Agents: Object Oriented Prolog for Cooperating Knowledge Based Systems. Knowledge Based Systems 5, (2), 125–136/1992.
5. Hooper, J. N., A Knowledge Based System for Catchment Planning. Ph. D. Thesis. University of Wales, 350 pp, 1994.