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2. Cornsweet, T. N. (ed.), 1970, “Visual Perception,” Academic Press, New York.
3. Davson, H. (ed.), 1962, “The Eye” (in four volumes), Adademic Press, New York.
4. Ditchburn, R. W., 1973, “Eye Movements and Visual Perception,” Clarendon Press, Oxford.
5. Duke-Elder, S. (ed.), 1939, “Textbook of Ophthalmology” (in seven volumes), C. V. Mosby, St. Louis.