1. CIE Publication No. 117. Discomfort glare in interior lighting. Vienna: CIE; 1995. p. 2–5.
2. IESNA. IES Lighting handbook 1984, Reference volume. New York: 1984. p. 9-46–9.
3. A study of glare from very large source;Hopkinson;Illuminating Engineering,1960
4. Evaluation of glare;Hopkinson;Illuminating Engineering,1957
5. Dark and light adaptation;Barlow,1972