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
"Vopĕnka, Petr and Hájek, Petr",The theory of semisets,,North-Holland,1972,Studies in logic and the foundations of mathematics,,0720422671,,https://cir.nii.ac.jp/crid/1130000798125661184