1. Baird, J. W.: The color sensitivity of the peripheral retina. Publication No. 29, Carnegie Institution: Washington 1905.
2. Baker, H. D., Rttshton, W. A. H.: Erythrolabe in the normal eye. J. Physiol. (Lond.) 161, 91–92 (1963).
3. Baker, H. D., Rttshton, W. A. H.: The red-sensitive pigment in normal cones. J. Physiol. (Lond.) 176, 56–72 (1965).
4. Békésy, G. von: Experiments in Hearing (Translated by Wever, E. G.). New York: Wiley 1960.
5. Benham, C. E.: Notes. Nature (Lond.) 51, 113–114 (1894a).