Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "小林, 雄一郎 and Yuichiro, Kobayashi",Extracting characteristics of English essays written by Japanese EFL learners on the NS/NNS text categorization model,じんもんこん2009論文集,,情報処理学会,2009-12-11,2009,16,261-268,https://cir.nii.ac.jp/crid/1050292572154538240,