Levin, Jonathan and Steven Tadelis (2008) "Contracting for Government Services: Theory and Evidence from U.S. Cities," forthcoming, Journal of Industrial Economics. [http://www.edegan.com/pdfs/Levin%20Tadelis%20(2008)%20-%20Contracting%20for%20Government%20Services.pdf pdf] [http://www.edegan.com/repository/Levin%20Tadelis%20(2008)%20-%20Contracting%20for%20Government%20Services%20Class%20Slides.pdf Class Slides]