Bidarra, R., van den Berg, E. and Bronsvoort, W.F. (2001) Web-based collaborative feature modeling. In Proceedings of Solid Modeling '01 - Sixth ACM Symposium on Solid Modeling and Applications, 6-8 June, Ann Arbor, MI, USA, Anderson, D.C. and Lee, K. (Eds.), ACM Press, NY, pp. 319-320  

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