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 "Kauppi, Heikki and Koskela, Erkki and Stenbacka, Rune",Equilibrium unemployment and investment under product and labour market imperfections,,Bank of Finland,2004,Bank of Finland discussion papers,,9524621363,,https://cir.nii.ac.jp/crid/1130000794757852544