References
- Illuminating Engineering Society of North America Lighting Handbook, eighth edition. 1993. New York: IESNA.
- Clark, F. 1963. Accurate maintenance factors. Ilium Eng 58 (no. 3):124–130.
- Clark, F. 1966. Accurate maintenance factors—Part two (luminaire dirt depreciation). Ilium Eng, 61 (no. 1):37–46.
- Siminovitch, M.J.; Rubinstein, F.M.; and Verderber, R.R. 1984. Determining lamp/ballast system performance with a temperature-controlled integrating chamber. J of the IES 14 (no. 1):364–378.
- Verderber, R.R.; Morse, O.; Rubinstein, F.; and Siminovitch, M. 1988. Measurement of optical efficiency of fluorescent luminaires. J of the IES 17 (no. 2):44–50.
- Lewin, I. and Howell, L. 1992. Development of a portable traffic signal photometer. J of the IES 21 (no. 1):22–28.
- IESNA 1993. Lighting Handbook, eighth edition. New York: IESNA.