@techreport{NBERw13115,
 title = "Implications of Search Frictions: Matching Aggregate and Establishment-level Observations",
 author = "Russell Cooper and John Haltiwanger and Jonathan L. Willis",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13115",
 year = "2007",
 month = "May",
 URL = "http://www.nber.org/papers/w13115",
}