References
- SpencerD. E. and GastonE. A., “On Three Current Definitions of Reflectance”, Abstract, Journal of the Optical Society of America, Vol. 58, November 1968, p. 1553; and SpencerD. E., and GastonE. A., “Vector Representation for Reflectance and Transmittance”, Abstract, Journal of the Optical Society of America, Vol. 62, May 1972, p. 713; Spencer, D. E. and Gaston, E. A., “Numerical Ranges of the Diffuse and Specular Reflectances,” Journal of the Illuminating Engineering Society, Vol. 2, No. 4, July 1973, p. 400.
- SpencerD. E. and GastonE. A., “On the Specification of Polarization”, Illuminating Engineering, Vol. 66, April 1971, p. 271.
- MoonParry and SpencerD. E., “Brightness and Helios”, Illuminating Engineering, Vol. 39, September 1944, p. 507.