Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) John C. Seitz and Claire G. Whitmore,Measurement of Erythema and Tanning Responses in Human Skin Using a Tri-Stimulus Colorimeter,Dermatology,1018-8665,S. Karger AG,1988,177,2,70-75,https://cir.nii.ac.jp/crid/1363388844949085824,https://doi.org/10.1159/000248520