Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nakajima Kenichi and Nansai Keisuke and Matsubae Kazuyo and Nagasaka Tetsuya,Material Flow of Iron in Global Supply Chain,Tetsu-to-Hagane,0021-1575,The Iron and Steel Institute of Japan,2014,100,6,750-755,https://cir.nii.ac.jp/crid/1390001205126859776,https://doi.org/10.2355/tetsutohagane.100.750