1. Beck, J. (1972).Surface color perception. Ithaca: Cornell University Press.
2. Beck, J. (1975). Surface color.Scientific American,232(2), 62–75.
3. Research Laboratory for Electronics Progress Reports;M. Brill,1976
4. Metelli, F. (1974a). Achromatic color conditions in the perception of transparency. In R. B. MacLeod & H. L. Pick (Eds.),Perception: Essays in honor of J. J. Gibson (pp. 95–116). Ithaca: Cornell University Press.
5. Metelli, F. (1974b). The perception of transparency.Scientific American,230(4), 90–98.