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) Keith A. Kvenvolden,Gas hydrates—geological perspective and global change,Reviews of Geophysics,8755-1209,American Geophysical Union (AGU),1993-05,31,2,173-187,https://cir.nii.ac.jp/crid/1361981470667978624,https://doi.org/10.1029/93rg00268