1. EDS Unigraphics, Hybrid Modeling Fundamental student Guide. Version 13.
2. EDS Unigraphics, the reference of API Based on EDS Unigraphis.
3. Giarratano Riley, (1989), “Expert systems, Principle and Programming”, PWS-KENT Publishing Company.
4. Elsevier Science Publishers;HP Wang,1991
5. Kesheng Wang,Tang Meng, Hilrpa L. Gelgele, (2000), Process Planing and its integration with design and machine process. ICME The 8th International Conference on Manufacturing Engineering, Sydney.