@inbook{NBERc10785,
 Crossref = "NBERjaff02-1",
 title = "Intellectual Property: When Is It the Best Incentive System?",
 author = "Nancy Gallini and Suzanne Scotchmer",
 BookTitle = "Innovation Policy and the Economy, Volume 2",
 Publisher = "MIT Press",
 pages = "51-78",
 year = "2002",
 month = "January",
 URL = "http://www.nber.org/chapters/c10785",
}
@book{NBERjaff02-1,
 title = "Innovation Policy and the Economy, Volume 2",
 author = "Adam B. Jaffe and Josh Lerner and Scott Stern",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "MIT Press",
 year = "2002",
 URL = "http://www.nber.org/books/jaff02-1",
}