Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nakagawa Yasuo and Ohtani Fumio,The Measurement of Spectral Irradiance in Short UV Region down to 200nm,JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN,0019-2341,The Illuminating Engineering Institute of Japan,1975,59,9,462-467,https://cir.nii.ac.jp/crid/1390001204077463296,https://doi.org/10.2150/jieij1917.59.9_462