1. B. A. Wandell, Foundations of Visions, Sinauer Associates, Inc., Sunderland, Massachusetts, (1995).
2. The role of glutamate in retinal circuitry;Massey,1995
3. H. Kolb, E. Fernandez and R. Nelson, WebVision - the Organization of the Retina and Visual System, John Moran Eye Center, University of Utah, http://webvision.med.utah.edu/.
4. How the Retina Works
5. A biologically inspired connectionist model for image feature extraction in 2D pattern recognition;Chafin,1999