@techreport{NBERw10038,
 title = "Market Size in Innovation: Theory and Evidence From the Pharmaceutical Industry",
 author = "Daron Acemoglu and Joshua Linn",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "10038",
 year = "2003",
 month = "October",
 URL = "http://www.nber.org/papers/w10038",
}