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
"Cornwell, Richard R.",Conditions for the graph and the integral of a correspondence to be open : (Preliminary version),,Princeton University Econometric Research Program,1970,Research memorandum,,,,https://cir.nii.ac.jp/crid/1130282270560866688