Journal articles

• Umbrella Branding with Imperfect Observability and Moral Hazard, International Journal of Industrial Organization 27 (2009), 206-213.
• Technology Adoption With Multiple Alternative Designs and the Option to Wait (with Cristian Dezso), Journal of Economics and Management Strategy 17 (2008), 413-441.
• Are Sunk Costs a Barrier to Entry? (with Thomas Ross), Journal of Economics and Management Strategy 17 (2008), 97-112.
• Go for Broke or Play it Safe? Dynamic Competition with Choice of Variance (with Axel Anderson), Rand Journal of Economics 38 (2007), 593-609.
• Small Firms in Portugal: A Selective Survey of Stylized Facts, Economic Analysis, and Policy Implications, Portuguese Economic Journal 6 (2007), 65-88.
• An Equilibrium Approach to International Merger Policy, International Journal of Industrial Organization 23 (2005), 739-751.
• Bertrand Supertraps (with J Miguel Villas-Boas), Management Science 51 (2005), 599-613.
• Simultaneous Entry and Welfare, European Economic Review 48 (2004), 943-957. [Note: a previous version of this paper was circulated as "Entry Mistakes"]
• On the Evolution of the Firm Size Distribution: Facts and Theory (with José Mata), American Economic Review 93 (2003), 1075-1090.
• Horizontal Mergers With Free Entry: Why Cost Efficiencies May Be a Weak Defense and Asset Sales a Poor Remedy, International Journal of Industrial Organization 21 (2003), 607-623.
• R&D Competition When Firms Choose Variance, Journal of Economics and Management Strategy 12 (2003), 139-150.
• International Merger Policy Coordination, Japan and The World Economy 15 (2003), 21-30.
• Increasing Dominance With No Efficiency Effect, Journal of Economic Theory 102 (2002), 471-479.
• Stretching Firm and Brand Reputation, Rand Journal of Economics 31 (2000), 658-673.
• R and D Cooperation and Product Market Competition, International Journal of Industrial Organization 18 (2000), 1033-1047.
• Competing For Foreign Direct Investment (with Pedro Barros), Review of International Economics 8 (2000), 360-371.
• Meaningful Cheap Talk Must Improve Equilibrium Payoffs (with Lanny Arvan and Vasco Santos), Mathematical Social Sciences 37 (1999), 97-106.
• Monopoly Pricing with Network Externalities (with David Salant and Glenn Woroch), International Journal of Industrial Organization 17 (1999), 199-214.
• Exchange Rates and Market Shares (with Antonio S. Mello), Economics Letters 55 (1997), 61-67. Erratum, 57 (1997), 127-128.
• The Learning Curve, Predation, Antitrust, and Welfare (with Michael Riordan), Journal of Industrial Economics 45 (1997), 155-169.
• Conjectural Variations as a Reduced Form, Economics Letters 49 (1995), 397-402.
• Must Sell (with Jozsef Sakovics), Journal of Economics and Management Strategy 4 (1995), 55-68.
• Sunk Costs, Firm Size and Firm Growth, Journal of Industrial Economics 18 (1995), 161-172.  Translated into Chinese and published in Economic Development Research (East China University of Science and Technology), No. 4, 1996.
• Merger Policy in Open Economies (with Pedro P. Barros), European Economic Review 38 (1994), 1041-1055.
• The Learning Curve, Market Dominance, and Predatory Pricing (with Michael H. Riordan), Econometrica 62 (1994), 1115-1140.
• Bias in Market R and D Portfolios, International Journal of Industrial Organization 12 (1994), 533-547.
• Experience Advantages and Entry Dynamics, Journal of Economic Theory 59 (1993), 403-416.
• Optimal Matching Auctions, Economics Letters 37 (1991), 7-9.
• Switching Costs and Bidding Parity in Government Procurement of Mainframe Computers (with Shane Greenstein), Journal of Law, Economics and Organization 6 (1990), 453-469.
• On the Adoption of Innovations with `Network' Externalities, Mathematical Social Sciences 19 (1990), 299-308.
• Optimal Pricing of the Portuguese Telephone Service, Applied Economics 22 (1990), 211-220.
• Incentives for Cost Reduction Under Price Cap Regulation (with Michael H. Riordan), Journal of Regulatory Economics 1 (1989), 93-102.  Reprinted in M. Einhorn (Ed), Price Caps and Incentive Regulation in the Telecommunications Industry, Norwell, Mass.: Kluwer Academic Publishers, 1991.
• Asymmetric Equilibria in Symmetric Games with Many Players, Economics Letters 27 (1988), 205-208.

Books and book chapters

• Standards Battles and Public Policy (with Tobias Kretschmer), in S. Greenstein and V. Stango (Eds), Standards and Public Policy, Cambridge, UK: CUP, 2007, 329-344.
• Equilibrium, Epidemic and Catastrophe: Diffusion of Innovations With Network Effects, in C. Antonelli, B. Hall, D. Foray and E. Steinmueller (Eds), New Frontiers in the Economics of Innovation and New Technology: Essays in Honor of Paul David, London, UK: Edward Elgar, 2006, 427-437.
• Introduction to Industrial Organization, Cambridge, Mass.: MIT Press, 2000.  Translated into Chinese and Italian (2002), Russian and Greek (2004).
• Economia Industrial (an undergraduate textbook on Industrial Organization), Lisbon: McGraw-Hill, 1994 (Portuguese edition).  Madrid: McGraw-Hill, 1997 (Spanish edition).
• An Empirical Analysis of Bank Branching: Portugal 1989-1991 (with W. Robert Majure), in D. Neven and L.-H. Roller (Eds), The Empirical Analysis of Industrial Organization (Report of a conference organized by the WZB, Berlin), London: CEPR, 1994.
• Network Consumption Externalities: The Case of Portuguese Telex Service (with António Leite), in C. Antonelli (Ed.), The Economics of Information Networks, Amsterdam: North-Holland, 1992, 129-139.
• Foreign Entry and Domestic Welfare (with Pedro P. Barros), in J. F. Amaral, D. Lucena, A. S. Mello (Eds.), The Portuguese Economy Towards 1992, Boston: Kluwer Academic Publishers, 1992, 101-116.

• Predatory Pricing, in William A. Darity, Jr. (Ed), International Encyclopedia of the Social Sciences, 2nd ed., Vol. 6, Detroit: Macmillan Reference USA, 2008, p428-429.
• Barriers to Entry, in Steven N. Durlauf and Lawrence E. Blume (Eds), The New Palgrave Dictionary of Economics, 2nd edition, Basingstoke and New York: Palgrave Macmillan, 2008.
• Market Power and Efficiency in Card Payment Systems: A Comment on Rochet and Tirole Review of Network Economics 5 (2006), 15 - 25.
• Collusion Theory: Where to Go Next?, Journal of Industry, Competition and Trade 5 (2005), 199-206.
• Review of R. Hardin's Trust and Trustworthiness, Journal of Economic Literature 41 (2003), 953-954.
• The California Electricity Crisis, Japan and the World Economy 14 (2002), 335-339.
• Comments on Clemons, Hitt, Gu, Thatcher, and Weber, Journal of Financial Services Research 22 (2002), 91-93.
• Comments on D. Sull and C. Markides, "easyJet's $500 Million Gamble," European Management Journal 17 (1999), 20-38.