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. Laskar and P. Robutel,The chaotic obliquity of the planets,Nature,0028-0836,Springer Science and Business Media LLC,1993-02,361,6413,608-612,https://cir.nii.ac.jp/crid/1362544420150330112,https://doi.org/10.1038/361608a0