CIE 84-1989 Measurement of Luminous Flux (1st Edition) (E)
IEC 60061-1 Lamp caps and holders together with gauges for the control of interchangeability and safety – Part 1: Lamp caps
IEC 60432-2 Incandescent lamps - Safety specifications - Part 2: Tungsten-halogen lamps for domestic and similar general lighting purposes*, 2012-05-01 Update