@techreport{NBERr1806, title = "Theories of Optimal Capital Structure: A Managerial Discretion Perspective", author = "Oliver Hart", institution = "National Bureau of Economic Research", type = "Working Paper", series = "Reprint Series", number = "1806", year = "1993", month = "September", URL = "http://www.nber.org/papers/r1806", abstract = {}, }