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) Amm Olaf,Ionospheric Elementary Current Systems in Spherical Coordinates and Their Application.,Journal of geomagnetism and geoelectricity,00221392,地球電磁気・地球惑星圏学会,1997,49,7,947-955,https://cir.nii.ac.jp/crid/1390282681486586368,https://doi.org/10.5636/jgg.49.947