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) 坂 幸恭,"Palynostratigraphy of the Lower Cretaceous Chengzihe Formation, Jixi Group of the Eastern Heilongjiang, Northeast China",Ibid No.507,,,2007,,,93-96,https://cir.nii.ac.jp/crid/1010000782465226378,