2Huang G Q. Development of a Web - based system for engineering change management[J]. Robotics and Computer- Integrated Manufacturing, 2001, 7(3):255 - 267.
4Kopp, William R, Gifford Charlie. Web -enabled Global Support System(GSS) for worldwide manufacturing[J] . ISA TECH/EXPO Technology Update Conference Proceedings, 1998, 2(4): 63-75.