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 "Ekern, Steinar",On the inadequacy of a probabilistic internal rate of return,,s.n.,1979,Norges Handelshøyskoles Særtrykk-Serie,,,,https://cir.nii.ac.jp/crid/1130282272189425792