DONG Jinxiang, SUN Jianling.Engineering database management system[M]. Hangzhou：Zhejiang University Press, 2001(in Chinese).[董金祥，孙建伶.工程数据库管理系统[M].杭州：浙江大学出版社，2000.]
[2]
SCHTTNER J，QI Guoning. Product data management in manufacturing industry[M]. Beijing:Mechanical Industry Press, 2000(in Chinese).[(德)约瑟夫·萧塔纳，祁国宁. 制造企业的产品数据管理[M]. 北京：机械工业出版社，2000.]
[3]
YU Junhe. Research and application of virtual product model for life cycle[D]. Hangzhou：Zhejiang University, 2002(in Chinese).[余军合. 面向全生命周期虚拟产品模型的研究与应用[D]. 杭州：浙江大学，2002.]
[4]
WANG Chaorui. Graph theory[M]. Beijing：Beijing Institute of Technology Press, 2001(in Chinese).[王朝瑞. 图论[M].北京： 北京理工大学出版社，2001.]
