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) Kumpera A,On the Lie and Cartan Theory of Invariant Differential Systems,"Journal of mathematical sciences, the University of Tokyo",13405705,東京大学,1999,6,2,229-314,https://cir.nii.ac.jp/crid/1570854176776977280,