1. Apples Oranges and UnLumens;Biberman;Appl. 0ptics,1967
2. Radiometry and the Detection of Optical Radiation;Boyd,1983
3. Optical Radiation Measurements;Budde,1983
4. Radiative Transfer;Chandrasekhar,1960
5. CIE (1990). “CIE 1988 2° Spectral Luminous Efficiency Function for Photopic Vision,” Tech. Rept. CIE 86. CIE, Vienna, Austria.