1. SIMMONS,M.K., Artificial Intelligence for engineeringdesign, Computer Aided Eng. Journal (April 1984) vol. 1. no. 3, p75–83
2. NIEBEL, B.W., Mechanised process selection for planning new designs, ASME (1965) paper no. 737.
3. STEUDEL, H.J., Computer-aided process planning: past, present and future, (1984) Int. J.Prod. Res., vol. 22, no. 2, 253–266.
4. TRUSKY, H.T., Automated planning reduces costs, American Machinist (April 1984) 80–82
5. WYSK, R.A., An Automated Process Planning and Selection Program: APPAS (1977) Ph.D. Thesis, Purdue University.