1. Abney, W. de W.: Researches in Colour Vision. London: Longmans, Green 1913.
2. Aguilar, M., Stiles, W. S.: Saturation of the rod mechanism of the retina at high levels of stimulation. Optica Acta 1, 59–65 (1954).
3. Bäuml, J., Engelhardt, A.: Das Sehen von Buntfarben in der Netzhautperipherie. Z. Biol. 104, 307–334 (1950).
4. Baird, J. W.: Colour sensitivity of the peripheral retina. Publication No. 29, Washington: Carnegie Institution (1905).
5. Blackwell, H. R., Blackwell, O. M.: Rod and cone receptor mechanisms in typical and atypical congenital achromatopsia. Vision Res. 1, 62–107 (1961).