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) RICHARD O. Y.,PERLITE,Industrial Minerals and Rocks,,"Society for Mining, Metallurgy, and Exploration, Inc",1994,,,735-749,https://cir.nii.ac.jp/crid/1573387449020113408,