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) Masahiko Takeda,"Contribution of wind, conductivity, and geomagnetic main field to the variation in the geomagnetic Sq field",Journal of Geophysical Research: Space Physics,2169-9380,American Geophysical Union (AGU),2013-07,118,7,4516-4522,https://cir.nii.ac.jp/crid/1362544418658209152,https://doi.org/10.1002/jgra.50386