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) Loïc Huder and Nicolas Gillet and Christopher C. Finlay and Magnus D. Hammer and Hervé Tchoungui,COV-OBS.x2: 180 years of geomagnetic field evolution from ground-based and satellite observations,"Earth, Planets and Space",1880-5981,Springer Science and Business Media LLC,2020-10-23,72,1,,https://cir.nii.ac.jp/crid/1360294645202658560,https://doi.org/10.1186/s40623-020-01194-2