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 "Dikranjan, Dikran N. and Tholen, W. (Walter)","Categorical structure of closure operators with applications to topology, algebra and discrete mathematics",,Kluwer Academic Publishers,1995,Mathematics and its applications,,0792337727,,https://cir.nii.ac.jp/crid/1130000797627848448