著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) KONDO M.,Energy-saving effect of high efficient traction motors in electric train,RTRI REPORT,,,2009,23,11,29-34,https://cir.nii.ac.jp/crid/1572261551140515712,