1. CIE 17.4: 1987 , “International lighting vocabulary,” Item No. 845-02-59 (1987).
2. CIE 13.3: 1995 , “Method of measuring and specifying colour rendering properties of light sources” (1995).
3. Spectral design considerations for white LED color rendering
4. CIE 177: 2007 , “Colour rendering of white LED light sources” (2007).
5. CIE 15: 2004 , “Colorimetry” 〈http://www.cie.co.at/main/freepubs.html〉 (2004).