著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) ALLEN J.,Time and Time Again : The Many Ways to Represent Time,Int. J. Intelligent Systems,,,1991,6,4,1-14,https://cir.nii.ac.jp/crid/1570854174922062464,