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) J. H. Sastri and K. Yumoto and J. V. S. V. Rao and A. Ikeda,Summer‐winter hemisphere asymmetry of the preliminary reverse impulse of geomagnetic storm sudden commencements at midlatitudes,Journal of Geophysical Research: Space Physics,0148-0227,American Geophysical Union (AGU),2008-05,113,A5,A05302,https://cir.nii.ac.jp/crid/1363670318237349376,https://doi.org/10.1029/2007ja012968