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) ,Effect of the Earth's oblateness on the estimation of global vertical total electron content maps,Geophysical Research Letters 34,,,2007,,,,https://cir.nii.ac.jp/crid/1010000781636663689,