1. Current status of feature technology;Shah;Technical Report R-88-GM-04,1988
2. Shape classification in computer-aided design;Kyprianou,1980
3. Extraction of feature information from three dimensional CAD data;Henderson,1984
4. Extraction and organisation of form features into a structured boundary model;Falcidieno,1987
5. Feature recognition and geometric reasoning for some process planning activities;Joshi,1990