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) HOWE S. J.,Economic analysis and feasibility study of gas production from Alaska North Slope gas hydrate reservoirs,"AAPG Hedberg Conference, Vancouver, BC, Canada, 2004",,,2004,,,,https://cir.nii.ac.jp/crid/1570854175634192512,