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 "Min, Jae-Sung and Choi, Sook Hee",Pressing issues in Korea's pension system,[Rev.],Korea Development Institute,1991,KDI working paper,,,,https://cir.nii.ac.jp/crid/1130000798340714880