"Pricing Patents for Licensing in Standard-Setting Organizations: Making Sense of FRAND Commitments" (with A. Layne-Farrar and A.J. Padilla), Antitrust Law Journal, 74 (2007): 671-706.

"Thoughts on the Chicago Legacy in Antitrust." In Where the Chicago School Overshot the Mark: The Effect of Conservative Economic Analysis on U.S. Antitrust (R. Pitofsky, ed.), New York: Oxford University Press, 2008, pp. 11-23.

"Innovation and Evolution of the Payments Industry" (with D.S. Evans). In Moving Money (R.E. Litan and M.N. Baily, eds.), Washington: Brookings Institution, 2009, pp. 36-76.

"Standard-Setting, Innovation Specialists, and Competition Policy," Journal of Industrial Economics, 57 (September 2009): 526-52.

"Should New Merger Guidelines Give UPP Market Definition?" GCP: The Antitrust Chronicle, December 2009, Release 1.

"Epilogue." In Post-Kyoto International Climate Policy: Implementing Architectures for Agreement (J.E. Aldy and R.N. Stavins, eds.), Cambridge: Cambridge University Press, 2010, pp. 889-898.

"Failure to Launch: Critical Mass in Platform Businesses" (with D.S. Evans), Review of Network Economics, 9 (December 2010), Issue 4, Article 1 (26 pages).

"Jeffrey Rohlfs' 1974 Model of Facebook: An Introduction," Competition Policy International, 7 (Spring 2011): 301-12.

"The Net Effects of the Proposed Durbin Fee Reductions on Consumers and Small Business" (with D.S. Evans and R.E. Litan). The Lydian Journal, Issue 5, March 2011.

"Why is Platform Pricing Generally Highly Skewed?" Review of Network Economics, 10 (December 2011), Issue 4, Article 1 (11 pages).

"Gridlock in 2030?" (with T.D. Heidel and J.G. Kassakian), Public Utilities Fortnightly, 150 (January 2012): 22-28.

"Evaluating Policies to Increase the Generation of Electricity from Renewable Energy," Review of Environmental Economics and Policy, 6 (Winter 2012): 45-64.

"’On a level with Dentists?’ Reflections on the Evolution of Industrial Organization." Review of Industrial Organization, 41 (November 2012): 157-79.

"From ‘Green Growth’ to Sound Policies: An Overview," Energy Economics, 34 (Supplement 1, November 2012): S2-S6.

"The Antitrust Analysis of Multi-Sided Platform Businesses," (with David S. Evans), Revised: January 2012. Forthcoming in Roger Blair and Daniel Sokol, eds., Oxford Handbook on International Antitrust Economics, Oxford University Press.

"The SO2 Allowance Trading System: The Ironic History of a Grand Policy Experiment" (with R.N. Stavins), Journal of Economic Perspectives, 27 (Winter 2013): 103-22.