2See Klepper, Tierney, and Nagin (1983) for a discussion of evidence on criminal justice outcomes by race, Altonji
and Blank (1999) and Neal and Johnson (1996) for evidence on pay di erentials by race, and Bayer, Casey, Ferreira, and
McMillan (2012) for evidence on racial patterns of prices paid in housing markets.
3See also George and Waldfogel (2003).
4Bresnahan and Reiss (1990) and Berry (1992) use data on the number of rms/products per market to draw inferences
about post-entry competition. Mazzeo (2002) extends the framework to di erentiated products, again relying only on
information on the number of products to draw inferences about post-entry competition.  Ahmad, E. and P. N. Stern (1984): \The Theory of Reform and Indian Indirect Taxes",
Journal of Public Economics 25: 259-98  Altonji, J.G., and R. M. Blank (1999): \Race and Gender in the Labor Market", Chapter
48 of the Handbook of Labor Economics, O. Ashenfelter and D. Card, eds.  Armstrong, M., Cowan, S., and J. Vickers (1994): \Regulatory Reform: Economic Analysis
and British Experience", MIT Press, Cambridge, MA.  Bayer, P., Casey, M.D., Ferreira, F., and R. McMillan (2012): \Price Discrimination in the
Housing Market", mimeo  Berry, S.T. (1992): \Estimation of a Model of Entry in the Airline Industry," Econometrica,
60: 889-917  Berry, S.T. (1994): \Estimating Discrete-Choice Models of Product Di erentiation,"
RAND Journal of Economics, 25(2): 242-262  Berry, S.T., and J. Waldfogel (1999): \Free Entry and Social Ine ciency in Radio Broad-
casting," RAND Journal of Economics, 30(3): 397-420  Berry, S.T., Eizenberg, A., and J. Waldfogel (2013): \Optimal Product Variety in Radio
Markets,," mimeo  Bresnahan, T.F., and P.C. Reiss. (1991): \Entry and Competition in Concentrated Mar-