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)
,Acute triangles in triangulations on the plane with minimum degree at least 4,Discrete Math. 303 no.1-3,,,2005,,,104-116,https://cir.nii.ac.jp/crid/1010000782433872271,