1. Advanced Production Systems, CAD/CAM Systems of the Future, CAD Systems Framework;Bø,1982
2. Logic and Databases: A Deductive Approach;Gallaire;ACM Computing Surveys,1984
3. DICAD - CAD System for Geometric Product Modelling;Grabowski,1982
4. F. Kimura et al.: A Study on Product Modelling for Integration of CAD/CAM, Integration of CAD/CAM, North-Holland (1983)
5. Prolog;Nakashima,1983