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) LEE K. M.,Bipolar-valued fuzzy sets and their operations,"Proc. Int. Conf. on Intelligent Technologies, Bangkok, Thailand, 2000",,,2000,,,307-312,https://cir.nii.ac.jp/crid/1573105975701596416,