GoldsteinE B, 2006Sensation and Perception7th edition (Belmont, CA: Wadsworth)
6.
von HelmholtzH, 1867/1962Treatise on Physiological Opticsvolume 3 (New York: Dover, 1962); English translation by SouthallJ P C for the Optical Society of America (1925) from the 3rd German edition of Handbuch der physiologischen Optik (first published in 1867, Leipzig: Voss)
7.
SnowdenRThompsonPTrosciankoT, 2006Basic Vision: An Introduction to Visual Perception (Oxford: Oxford University Press)