@techreport{NBERr0088,
 title = "Le Syndicalisme a Deux Visages",
 author = "Richard B. Freeman and James L. Medoff",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Reprint Series",
 number = "88",
 year = "1980",
 month = "September",
 URL = "http://www.nber.org/papers/r0088",
 abstract = {},
}