2JAYARAM S, CONNACHER H I, LYONS K W. Virtual assembly using virtual reality techniques[J]. Computer-- Aided Design, 1997,29(8) :575--584.
3BULLINGER H J, RICHTER M. Virtual assembly planning[J]. Human Factors and Ergonomics In Manufacturing, 2000,10(3) :331--341.
4BUTTERWORTH J, DAVIDSON A, HENCH S. 3DM: a three dimensional modeler using a head-- mounted display[A].Proceedings of the 1992 symposium on Interactive 3D grachics[C]. NewYork,WA,USA:ACM Press,1992. 135--138.