1. CIE—Commission Internationale de I’Eclairage. CIE Guideline (CIE 108-1994) Guide to recommended practice of daylight measurement, CIE Vienna, 1994.
2. Human factors in lighting;Boyce,2003
3. Compte Rendu, CIE 12 Session 1955. Natural Daylight. Official Recommendation, 2, part 3.2, II-IV & 35-37 (1955).
4. Standard skies for maritime climates;Tregenza;Lighting Research and Technology,1999
5. Analysing sky luminance scans to obtain frequency distributions of CIE Standard General Skies;Tregenza;Lighting Research and Technology,2004