4GRABOWIK C, KALINOWSKI K, MONICA Z. Integration of the CAD/CAPP/PPC systems [ J ]. Journal of Materials Processing Technology ,2005,164/165 : 1358 - 1368.
5CHU X N,TSO S K,TU Y L. A novel methodology for compurer aided process planning[ J ]. Advanced Manufacturing Technology, 2000,16 (10) :714 -719.