Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nakagawa Ryutaro,Open Data and License Design in the CC 4.0 Era(Open Data),The Journal of Information Science and Technology Association,09133801,"Information Science and Technology Association, Japan",2015,65,12,509-514,https://cir.nii.ac.jp/crid/1390282679151280896,https://doi.org/10.18919/jkg.65.12_509