1. Abadie, Alberto, and Guido Imbens, "Large Sample Properties of Matching Estimators for Average Treatment Effects," University of California, Berkeley, mimeo, 2004.
2. Althaus, Scott L., and Todd Trautman, "The Impact of Television Market Size on Voter Turnout in American Elections," mimeo, University of Illinois, 2004.
3. Barnouw, Erik, Tube of Plenty: The Evolution of American Television (New York: Oxford University Press, 1990).
4. Brody, Richard A. "The Puzzle of Political Participation in America," in Anthony Stephen King, ed., The New American Political System (Washington, DC: AEI Press, 1979).
5. DellaVigna, Stefano, and Ethan Kaplan, "The Fox News Effect: Media Bias and Voting," mimeo, University of California Berkeley, 2006.