Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 勝原 光治郎 and 五十嵐 元彦,海上物流の現状と将来,Techno marine Bulletin of the Society of Naval Architects of Japan,09168699,The Japan Society of Naval Architects and Ocean Engineers,1999,839,0,305-308,https://cir.nii.ac.jp/crid/1390001204059379200,https://doi.org/10.14856/technom.839.0_305