@inbook{NBERc5419,
 Crossref = "NBERales91-1",
 title = "The Spatial Mapping of Minimum Wage Legislation",
 author = "Keith T. Poole and Howard Rosenthal",
 BookTitle = "Politics and Economics in the Eighties",
 Publisher = "University of Chicago Press",
 pages = "215-250",
 year = "1991",
 month = "January",
 URL = "http://www.nber.org/chapters/c5419",
}
@book{NBERales91-1,
 title = "Politics and Economics in the Eighties",
 author = "Alberto Alesina and Geoffrey Carliner",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1991",
 URL = "http://www.nber.org/books/ales91-1",
}