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
"Kay, David C. and Guay, Merle D.",On sets having finitely many points of local nonconvexity and property P[n] [i.e. Pm],,University of Oklahoma,1969,Department of Mathematics Preprints,,,,https://cir.nii.ac.jp/crid/1130000794174467584