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) ,The language of primitive words is not regular : two simple proofs,Bull.Eur.Assoc.Theor.Comput.Sci.EATCS 87,,,2005,,,191-197,https://cir.nii.ac.jp/crid/1010000781604853632,