References
- J. E. Kaufman and J. F. Christensen, eds., IES Lighting Handbook, 5th Edition, Illuminating Engineering Society, New York, New York, 1972, Chapter 3, pgs. 3–14 and 3–24.
- J. E. Kaufman and J. F. Christensen, eds., IES Lighting Handbook, 5th Edition, Illuminating Engineering Society, New York, New York, 1972, Fig. 9–80.
- J. E. Kaufman and J. F. Christensen, eds., IES Lighting Handbook, 5th Edition, Illuminating Engineering Society, New York, New York, 1972, Chapter 3, pgs. 3–20.
- J. E. Kaufman and J. F. Christensen, eds., IES Lighting Handbook, 5th Edition, Illuminating Engineering Society, New York, New York, 1972, pgs. 6–6, 7–10, 25–2, 25–19, 11–5, 11–13.
- Congress Internationale Enluminer, “Definition of CIE standard overcast sky,” CIE Committee TC 4.2 Daylight, October 1978.