References
- BlackwellH. R. and HelmsR. N. “Application procedures for evaluation of veiling reflections in terms of ESI, Part I—General Principles”, Journal of the Illuminating Engineering Society, Vol. 2, No. 3, April 1973, p. 230.
- BlackwellH. R. “Development of procedures and instruments for visual task evaluation”, Illuminating Engineering, Vol. 65, No. 4, April 1970, p. 267.
- Subcommittee on Veiling Reflections of the Committee on Recommendations for Quality and Quantity of Illumination, “A method of evaluating the visual effectiveness of lighting systems”, RQQ Report No. 4, Illuminating Engineering, Vol. 65, No. 8, p. 504.
- “A unified framework of methods for evaluating visual performance aspects of lighting”, CIE Report No. 19, Commission Internationale de L'Éclairage, 1972. (Available from Secretary U.S. National Committee CIE, c/o National Bureau of Standards, Washington, D.C. 20234.)
- BlackwellH. R. “A general quantitative method for evaluating the visual performance data”, Illuminating Engineering, Vol. 58, No. 4, April 1963, p. 161.
- BlackwellH. R. “A more complete quantitative method for specification of interior illumination levels on the basis of performance data”, Illuminating Engineering, Vol. 64, No. 4, April, 1969, p. 289.
- BalckwellH. R. The evaluation of interior lighting on the basis of visual criteria, Applied Optics, No. 6, 1967.
- BlackwellH. R. “Measurement of the contrast rendition factor for pencil handwritten task”, Illuminating Engineering, Vol. 65, No. 4, April 1970, p. 199.