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
"Kumar, Rajesh","Fuzzy subgroups, fuzzy subrings and fuzzy ideals",,University of Delhi Publication,1993,Fuzzy algebra,,8185695083,,https://cir.nii.ac.jp/crid/1130000795941628544