Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAKAHASHI Jun and HORITA Tatsuya and YOKOMAKU Mutsumi,Analysis of Learning History of Keyboard Training Website,日本教育工学会大会講演論文集,,,2003-10-11,19,1,33-34,https://cir.nii.ac.jp/crid/1573668924897966720,