Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) AKAKURA Yasuhiro and SEMA Motohiro,A CONSIDERATION FOR ENLARGING SHIP SIZE OF JAPANESE MAJOR BULK CARGO SHIPPING,Doboku Gakkai Ronbunshuu D,1880-6058,Japan Society of Civil Engineers,2010,66,3,369-382,https://cir.nii.ac.jp/crid/1390001205253483904,https://doi.org/10.2208/jscejd.66.369