1. Kals, H.J.J., van Houten, F.J.A.M., Tiemersma, J.J., “CIM in Small Batch Part Manufacturing”. The 2nd CIRP International Seminar on Manufacturing Systems. 11-12 June 1990.
2. van Houten, F.J.A.M., van't Erve, A.H., Boogert, R.M., Nauta, J.M., Kals, H.J.J., “PART Selection of Machining Methods and Tools”. The 22nJ CIRP International Seminar on Manufacturing Systems. 11-12 June 1990.
3. van't Erve, A.H., “Computer Aided Process Planning for Pirt Manufacturing, an expert system approach”. PhD Thesis, University of Twente. IPSS.
4. van Houten, F.J.A.M., van't Ewe, A.H., “PART a Feature Based CAPP System”. Proceedings of the 21st CIRP seminar on manufacturing systems. Stockholm. 1989.
5. An Attempt to implement Expert System Techniques in CMPP;Sluga;Robotics & Computer Integrated Manufacturing.,1988