References
- “An analytic model for describing the influence of lighting parameters upon visual performance,” CIE Report No. 19–2, 1980.
- V. P. Gallagher, “A visibility metric for safe lighting of city streets,” Journal of the Illuminating Engineering Society, Vol. 5, No. 2, January 1976, p. 85.
- “Recommendations for the lighting of roads for motorized traffic,” CIE Report No. 12–2, 1977.