Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Syoji Takao and Yajima Kenichi and Hakamada Masao,Interior Lighting of Passenger Couches to Run on Tohokuand Joetsu-Shinkansen Lines,JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN,00192341,The Illuminating Engineering Institute of Japan,1982,66,1,7-10,https://cir.nii.ac.jp/crid/1390001204082837376,https://doi.org/10.2150/jieij1980.66.1_7