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) Libo Liu and Weixing Wan and Baiqi Ning and O. M. Pirog and V. I. Kurkin,Solar activity variations of the ionospheric peak electron density,Journal of Geophysical Research: Space Physics,0148-0227,American Geophysical Union (AGU),2006-08,111,A8,,https://cir.nii.ac.jp/crid/1362544418539655552,https://doi.org/10.1029/2006ja011598