Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "IKEDA,Mitsuo",Luminous efficiencies of 2゜and 10゜ fields for brightness perception obtained from Japanese subjects :,Journal of light and visual environment,,Illuminating Engineering Institute of Japan,,6,2,88-92,https://cir.nii.ac.jp/crid/1540291245332249728,