著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Ledger, Arthur J.",Affine and Riemannian Σ-spaces,,"Department of Mathematics, Keio University",1982,Seminar on mathematical sciences,,,,https://cir.nii.ac.jp/crid/1130000798165636352