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
"Choe, Chongwoo","Leverage, volatility and executive stock options",,"Institute of Economic Research, Hitotsubashi University",2001,Discussion paper series,,,,https://cir.nii.ac.jp/crid/1130000795981180160