The CSP index

Bean A.R. and Bell R I The CSP index: A practical measure of office lighting quality as perceived by the office worker Lighting Res. Technol. 24(4) 215-225 (1992)

Jay P. Inter-relationship of design criteria for lighting installations Trans. Illum. Eng. Soc. (London) 33 47 (1968)

Code for interior lighting (London: Chartered Institution of Building Services Engineers) ( 1984)

Code for interior lighting (London: Illuminating Engineering Society) (1977)