1. ISO/CIE 10526:1991, CIE standard colorimetric illuminants. ISO, Geneva (1991)
2. CIE 015:2018, Colorimetry 4th Edition. CIE, Vienna (2018)
3. ISO 3664:2009. Graphic technology and photography — Viewing conditions. ISO, Geneva (2009)
4. ISO 23603:2005, Standard method of assessing the spectral quality of daylight simulators for visual appraisal and measurement of colour. ISO, Geneva (2005)
5. CIE 192:2010, Practical Daylight Sources for Colorimetry. CIE, Vienna (2010)