1. Long Wavelength Pass Filters Designed for the Management of Color Vision Deficiencies
2. Optical filter combination for improving color discrimination. US Patent 3,877,797; 15 April 1975.
3. The use of CRT displays in research on colour vision. Tübingen, Germany: Colour vision deficiencies XII, Proc 12th Symp Int Res Grp Color Vision Def; 1993. p 423.
4. Screening colour vision with an LMS calibrated display. Pau, France: Colour vision deficiencies XII, Proc 13th Symp Int Res Grp Color Vision Def; 1995. p 345.
5. Colorimetric and photometric properties of a 2° fundamental observer