1. Computer Numerical Control of Machine Tools;Thyer,1991
2. Fundamentals of Computer Numerical Control;Luggen,1994
3. MB Productietechniek, March 1999, p. 10
4. T. Klahorst, How to justify multimachine systems, American Machinist (1983) 67–70.
5. Establish the viability of FMS;Primrose;FMS Magazine,1985