@techreport{NBERw13859, title = "The Effect of Mergers on Consumer Prices: Evidence from Five Selected Case Studies", author = "Orley Ashenfelter and Daniel Hosken", institution = "National Bureau of Economic Research", type = "Working Paper", series = "Working Paper Series", number = "13859", year = "2008", month = "March", URL = "http://www.nber.org/papers/w13859", }