Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 安田 正行 and 山下 幸雄,最近の電気工事技術,The Journal of the Institute of Electrical Engineers of Japan,00202878,The Institute of Electrical Engineers of Japan,1985,105,4,297-304,https://cir.nii.ac.jp/crid/1390001205141301504,https://doi.org/10.11526/ieejjournal1888.105.297