1. Almagor, M., Farley, W. W., and Snyder, H. L. “Spatiotemporal Integration in the Visual System.” Wright-Patterson AFB, OH: Aerospace Medical Research Laboratory Technical Report AMRLTR-78–126, February 1979.
2. Barlow, H. B. “Temporal and Spatial Summation in Human Vision at Different Background Intensities.” Journal of Physiology, 141, 337–350, 1958.
3. Blackwell, H. R. “Contrast Thresholds of the Human Eye.” Journal of the Optical Society of America, 36, 624–643, 1946.
4. Bloch, A. M. “Experiences sur la vision,” C. R. Societe de Biologie (Paris), 37, 493–495, 1885.
5. Brown, J. L. “Flicker and Intermittent Stimulation.” In Vision and Visual Perception, ed. C. H. Graham. New York: Wiley, 1965.