Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okada Kiyoshi,CIE Method of Specification on the Color Rendering Index of Light Source,The Journal of the Institute of Television Engineers of Japan,03743470,The Institute of Image Information and Television Engineers,1966,20,12,810-817,https://cir.nii.ac.jp/crid/1390282680372224256,https://doi.org/10.3169/itej1954.20.12_810