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) Alison Olcott Marshall and Julienne R. Emry and Craig P. Marshall,Multiple Generations of Carbon in the Apex Chert and Implications for Preservation of Microfossils,Astrobiology,1531-1074,SAGE Publications,2012-02,12,2,160-166,https://cir.nii.ac.jp/crid/1362544419981660416,https://doi.org/10.1089/ast.2011.0729