1. Parasolid Solid Modeler, Version 10.1. Programming Reference, Unigraphics Solutions Inc., Maryland Height, 1999.
2. Henderson MR. Extraction of feature information from three-dimensional CAD data. PhD thesis, Purdue University, 1984.
3. Kung H. An investigation into development of process plans from solid geometric modeling representations. PhD thesis, Oklahoma State University, 1984.
4. Graph-based heuristics for recognition of machined features from a 3D solid model;Joshi;Computer-Aided Design,1988
5. Sakurai H, Gossard DC. Shape feature recognition system from 3D solid models. In: Proceedings of the ASME Computer in Engineering Conference, August 1988. p. 515–9.