1. Reniff LA. Visual determination of color differences using probit analysis: Phase II, M.S. Thesis. New York: Rochester Institute of Technology; 1989.
2. Snyder GD. Visual determination of industrial color-difference tolerances using probit analysis, M.S. Thesis. New York: Rochester Institute of Technology; 1991.
3. Balonon-Rosen MR. An uncertainty analysis of a color tolerance database, M.S. Thesis. New York: Rochester Institute of Technology; 1993.
4. Visual determination of suprathreshold color-difference tolerances using probit analysis;Berns;Color Res Appl,1991
5. Chromaticity-discrimination ellipses for surface colours;Luo;Color Res Appl,1986