1. Generalization/Specialization as a Basis for Software Specification
2. BUNCE , B. G. PRATT , M. J. SAVEY , S. , and PINTE , J. , 1986 , Feature extraction and process planning . CAM-I Inc. , Arlington , Texas .
3. BUTTERFIELD , W. R. GREEN , M. K. SCOTT , D. C. , and STOKER , W. J. , 1987 , Part features for process planning . Report C85, 3 , CAM-I Inc. , Arlington , Texas .
4. Automatic recognition of machined surfaces from a 3D solid model
5. HENDERSON , M. R. , 1984 , Extraction of feature information from three dimensional CAD data . Ph.D Thesis , Purdue University , Indiana .