1. S. Aydinli, J. Krochmann, Guide on daylighting of building interiors, in: Data on Daylight and Solar Radiation, Draft, CIE, 1987 (Chapter 10).
2. CIE, Standardization of luminance distribution on overcast skies, in: Proceedings of the 13th Session CIE, vol. II, Parts 2 and 3, Zurich, 1955.
3. CIE, Standardization of Luminance Distribution on Clear Skies, CIE Publication No. 22, TC-4.2, 1973.
4. CIE, International Lighting Vocabulary, CIE Publication No. 50, 1987.
5. D. Kendrick, et al., Guide to Recommended Practice of Daylight Measurement, CIE TC-3.07, Final Draft, August 1993, pp. 16–26.