@techreport{NBERr2117, title = "Macroeconomic Implications of Variation in the Workweek of Capital", author = "Matthew D. Shapiro", institution = "National Bureau of Economic Research", type = "Working Paper", series = "Reprint Series", number = "2117", year = "1997", month = "May", URL = "http://www.nber.org/papers/r2117", abstract = {}, }