Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) UMEZU Takeshi and IIDA Ken,"Use of online encyclopedia, Poplardia Net : A case study in a school",Journal of Information Processing and Management,00217298,Japan Science and Technology Agency,2011,54,6,325-334,https://cir.nii.ac.jp/crid/1390282680484650880,https://doi.org/10.1241/johokanri.54.325