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) Mita Hajime and Shimoyama Akira,"Distribution of polycyclic aromatic hydrocarbons in the K/T boundary sediments at Kawaruppu, Hokkaido, Japan.",GEOCHEMICAL JOURNAL,00167002,一般社団法人日本地球化学会,1999,33,5,305-315,https://cir.nii.ac.jp/crid/1390001204550812032,https://doi.org/10.2343/geochemj.33.305