1. AIM@SHAPE: Advanced and Innovative Models and Tools for the Development of Semantic-based Systems for Handling, Acquiring, and Processing Knowledge Embedded in Multidimensional Digital Objects, European Network of Excellence, Key Action: 2.3.1.7 Semantic-based Knowledge Systems, VI Framework, URL: http://www.aimatshape.net .
2. R. Bidarra and W.F. Bronsvoort, Semantic feature modelling, Computer Aided Design 32, 2000, 201–225.
3. J.J. Shah, Parametric and Feature-Based CAD/CAM, Wiley Interscience Publication, John Wiley Sons, Inc., 1995.
4. G. Vosniakos, Investigation of feature-based shape modelling for mechanical parts with free form surfaces, Int. J. Adv. Manuf. Technol. 15, 1999, 188–199.
5. J.S.M. Vergeest and I. Horvath, Parameterization of FreeForm Features, in Proceedings of the IEEE Shape Modelling International Conference 2001, pp. 20–28.