Issue No.02 - February (1985 vol.5)
Richard Boltz , Emerson Electric Company, Electronics and Space Division
Productivity analysis showed that one user realizes a substantial increase in engineering-related activities when using CAD graphics as a design tool.
Richard Boltz, "Mechanical Design Productivity Using CAD Graphics? A User's Point of View", IEEE Computer Graphics and Applications, vol.5, no. 2, pp. 40-44, February 1985, doi:10.1109/MCG.1985.276401