1. Foveal red-green ratios of normals, colourblinds and heterozygotes;Adam,1969
2. Variation in the visual pigments of human dichromats and normal human trichromats;Alpern,1987
3. The red and green cone visual pigments of deuteranomalous trichromacy;Alpern;Journal of Physiology,1977
4. Evidenz fu¨r eine Mosaikstruktur der Netzhaut bei Konduktorinnen fu¨r Dichromasie;Born;Human Genetics,1976
5. Human colour vision;Brindley;Progress in Biophysics,1957