@techreport{NBERw12588,
 title = "Optimal Inequality/Optimal Incentives: Evidence from a Tournament",
 author = "Richard B. Freeman and Alexander M. Gelber",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12588",
 year = "2006",
 month = "October",
 URL = "http://www.nber.org/papers/w12588",
}