Product modeling for computer-aided design and manufacturing : selected and expanded papers from the IFIP TC5/WG5.2 Working Conference on Geometric Modeling for Product Engineering, Rensselaerville, U.S.A., 17-21 June 1990 - Turner, J., 1951- .; Pegna, J., 1956- .; Wozny, M. J. (North-Holland, 1991)