著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Xiaohong Zhang and Duoqian Miao and Caihui Liu and Meilong Le,Constructive methods of rough approximation operators and multigranulation rough sets,Knowledge-Based Systems,0950-7051,Elsevier BV,2016-01,91,,114-125,https://cir.nii.ac.jp/crid/1363388845407595520,https://doi.org/10.1016/j.knosys.2015.09.036