@techreport{NBERw13260,
 title = "Incomplete Markets, Heterogeneity and Macroeconomic Dynamics",
 author = "Bruce Preston and Mauro Roca",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13260",
 year = "2007",
 month = "July",
 URL = "http://www.nber.org/papers/w13260",
}