References
- KaufmanJ. E., “A Diffusion Rating System for Portable Luminaires”, Illuminating Engineering, Vol. 60, October 1965, p. 597.
- SampsonFoster K., Contrast Rendition in School Lighting, Educational Facilities Laboratories, 1970.
- RQQ Report No. 2, “Outline of a Standard Procedure for Computing Visual Comfort Ratings for Interior Lighting”, Illuminating Engineering, Vol. 61, October 1966, p. 643.