Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOHARA Ichiro,Global trend of classification harmonization and IP5 Common Hybrid Classification Project,Journal of Information Processing and Management,00217298,Japan Science and Technology Agency,2011,54,2,73-78,https://cir.nii.ac.jp/crid/1390282680484566400,https://doi.org/10.1241/johokanri.54.73