References
- Illuminating Engineering Society of North America. 1984. IES Guide for Calibration of Photoelectric Devices, LM-48–1984. New York: IESNA.
- American National Standards Institute. 1988. New York. Locking-type photocontrol devices and mating receptacles—physical and electrical interchangeability and testing ANSI C136.10–1988.
- HowellE.K.. 1961. Photoelectric controls for street lights. Electrical Engineering: 780.
- Edison Electric Institute. Street lighting manual. Third edition. EEL