References
- Levin Robert, “The Photometric Connection” Lighting Design and Application, Sept., Oct., Nov., and Dec., 1982, Volume 12, nos. 9 through 12.
- IES Testing Procedures Committee. “IES Approved Method for Photometric Testing of Indoor Fluorescent Luminaires-LM41”, Journal of the Illuminating Engineering Society, Oct 1972.
- IES Testing Procedures Committee. “IES Approved Guide for the Photometric and Thermal Testing of Air Cooled Heat Transfer Luminaires-LM56”, Journal of the Illuminating Engineering Society, Oct 1978.
- American National Standard, ANSI C82. 2–1977, “Methods of Measurement of Fluorescent Lamp Ballasts.”.