1. In process tool wear sensors for cutting operations;Micheletti;Annals of CIRP,1976
2. A critical review of sensors for unmanned machining;Tlusty;Annals of CIRP,1983
3. Development and trends in monitoring and control of machining processes;Toenshoff;Annals of CIRP,1988
4. D.A. Dornfeld, W. Koenig, G. Kettler, Present state of tools and process monitoring in cutting, Proc. New Developments in Cutting, VDI Berichte NR 988, Duesseldorf, (1993) 363–376.
5. K. Iwata, Sensing technologies for improving the machine tool function, Proc. 3rd International Machine Tool Engineer’s Conference, JMTBA, Tokyo, (1988) 87–109.