1. “The Establishment and Maintenance of Abstract and Concrete Color Order Systems,” in Colour Report F26, Scandinavian Colour Institute, Stockholm, 1983, paper W16.
2. “Absolute Colour Estimations by the NCS Method,” in Colour Report F26, Scandinavian Colour Institute, Stockholm, 1983, paper W36.
3. Final Report of the OSA Subcommittee on the Spacing of the Munsell Colors*
4. “Uniform Color Scales of Optical Society of America,” in Colour Report F26, Scandinavian Colour Institute, Stockholm, 1983, paper W15.
5. A Psychological Color Solid*