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)
"Niwa, Masahiko",Group Completions Ⅰ : An Observation from a Category-Theoretical Point of View on the Ordinary Group Completions of Commutative Monoids,"滋賀大学教育学部紀要, 3, 自然科学",1342-9272,滋賀大学教育学部,1998,48,,67-74,https://cir.nii.ac.jp/crid/1050001338441896576,