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) FRITTS D. C.,Overview and summary of the spread F Experiment (SpreadFEx),Ann. Geophys.,,,2008,0,,,https://cir.nii.ac.jp/crid/1570854175023281792,