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) "桑原, 類史",A note on a heat invariant and the Ricci flow on surfaces,"Journal of mathematics, the University of Tokushima",13467387,徳島大学,2006,40,,15-19,https://cir.nii.ac.jp/crid/1050020697878113792,