Research: (as of June, 2010)

Ongoing Research and Working Papers:

“Calling clubs: Network Competition with Non-Uniform Calling Patterns”, June 2010 (with Roman Inderst and Tommaso Valletti)

“Welfare Analysis of Regulating Mobile Termination Rates in the UK (with an Application to the Orange/T-Mobile Merger),” 2010, with David Harbord, CEPR Discussion Paper 7730. Revise and resubmit.

“When Two-Part Tariffs are not enough: Mixing with Nonlinear Pricing,” 2010, with Tommaso Valletti, CEPR Discussion Paper 7720.

“Competition between multiple asymmetric networks: A toolkit and applications”, 13 February 2009 (update expected for July 2010)

“Market Penetration and Late Entry in Mobile Telephony”, 20 January 2009. Previously NET Institute Working Paper 08-038.

“The economics of transversal government Agencies”, 9 January 2009, with Pedro Pita Barros and Tore Nilssen. Previously “Keeping Both Eyes Wide Open: The Life of a Competition Authority Among Sectoral Regulators,” with Pedro Pita Barros and Tore Nilssen, CEPR Discussion Paper 6861 (2008).

“Tariff-Mediated Network Externalities: Is Regulatory Intervention Any Good?,” June 2008, CEPR Discussion Paper 6866. Revise and resubmit

"Sectoral Regulators and the Competition Authority: Which Relationship is Best?," 28 March 2008, with Pedro Pita Barros. Previously: CEPR Discussion Paper 4541 (August 2004)

"On the Community Patent," 2005, CEPR Discussion Paper 4883.

"Dynamic R&D-Competition with Endogenous Innovation Targets and Leapfrogging," UNL Working paper 370, 1999.

Publications:

“Racing for Investment under Mandatory Access”, July 2010, with João Vareda, forthcoming in B.E. Journal of Economic Analysis & Policy. Previously “The Race for Telecoms Infrastructure Investment with Bypass: Can Access Regulation Achieve the First-best?” , CEPR Discussion Paper 6203 (March 2007).

“National FTTH plans in France, Italy and Portugal,” 2010, with March Bourreau and Carlo Cambini, forthcoming in Communications & Strategies. Also EUI Working Paper RSCAS 2010/51.

“Mixing Goods with Two-Part Tariffs,” 2007, with Tommaso Valletti, European Economic Review, 51, 1733-1750. Previous version: CEPR Discussion Paper 5437.

“On-Net and Off-Net Pricing On Asymmetric Telecommunications Networks,” 2007, Information Economics & Policy, 19(2), pp. 171-188. Previous version: CEPR Discussion Paper 5588.

“Bertrand Oligopoly and Sharing Rules,” 2007, Economic Theory, 31(3), pp. 573-585. Previous version: CEPR Discussion Paper 4972.

"Should Uniform Pricing be imposed on Entrants?," 2006, Journal of Regulatory Economics, 30, pp. 199-216. Previous version: CEPR Discussion Paper 5052.

"Asymmetry, Stability and Growth in a Step-by-step R&D-race," 2003, European Economic Review, 47(2), pp. 245-257.

"Existence and Comparative Statics in Differentiated Cournot Oligopolies," 2003, International Journal of Industrial Organization, 21, pp. 989-1019.

"Universal Service and Entry: The role of uniform pricing and coverage constraints," 2002, with Pedro P. Barros and Tommaso M. Valletti, Journal of Regulatory Economics, 21(2), 169-190.

"The Interplay between Regulation and Competition: The Case of Universal Service Obligations", 2002, with Tommaso Valletti, Ifo-Studien, 48(1), 57-71.

"Mixed Bertrand Equilibria under Decreasing Returns to Scale: An Embarrassment of Riches," 2002, Economics Letters, 74, 359-362.

Other papers:

“Os Elementos Escondidos da Tarifação ao Segundo,” 2008, with Pedro Pita Barros (in Portuguese).

“A note on symmetrically correlated random Variables,” 2001.