@inbook{NBERc8637,
 Crossref = "NBERjohn94-1",
 title = "Explaining the Success of Federal Employees as an Interest Group",
 author = "Ronald N. Johnson and Gary D. Libecap",
 BookTitle = "The Federal Civil Service System and The Problem of Bureaucracy",
 Publisher = "University of Chicago Press",
 pages = "126-153",
 year = "1994",
 month = "January",
 URL = "http://www.nber.org/chapters/c8637",
}
@book{NBERjohn94-1,
 title = "The Federal Civil Service System and The Problem of Bureaucracy",
 author = "Ronald N. Johnson and Gary D. Libecap",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1994",
 URL = "http://www.nber.org/books/john94-1",
}