The Interactive Computer Graphics System for Machined Part Design and NC Tape Generation. - Lawrence O. Sinkey; Jeffrey Z. Gingerich (DAC, 1972)

Computer Graphics Building Definition System. - Jeffrey Z. Gingerich (DAC, 1973)

A hybrid CAD/CAM system for mechanical applications. - Jeffrey Z. Gingerich; Michael P. Carroll; E. J. Chelius; Po-Kuan Lu (DAC, 1982)