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) Hirayama Michihiro and Sumi Naoya,Absolutely continuous invariant measures for expansive diffeomorphisms of the 2-torus,Hiroshima mathematical journal,00182079,広島大学,2007-11,37,3,491-517,https://cir.nii.ac.jp/crid/1570009752384038528,