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Work in progress

• Trade, renewable energy and market power in power markets (co-authors: Kurt Brekke and Odd Rune Straume) 

• Competition and the riskiness of banks' loan portfolios (co-author: Øivind Anti Nilsen)

• Disadvantageous semicollusion: Price competition in the Norwegian airline industry (co-author: Frode Steen) 

• 'Now you are asking for a real war!' Private Alarm Systems in Norway (co-author: Kurt Brekke)

• Coordinated Rebate Reductions and Semi-collusion: Retail Gasoline in Sweden gasoline market (co-author: Frode Steen)

Articles in refereed international journals

• "Upward pricing pressure in two-sided markets: Incorporating rebalancing effects", International Journal of Industrial Organization, 2021, 74, 102692. (co-author:A. Cosnita-Langlais and B.O. Johansen)

• "Enforcement and Deterrence in Merger Control: The Case of Merger Remedies", Review of Law & Economics, 2018, 14 (3). (co-author: A. Cosnita-Langlais)

• "The effects of strategic news sources on media coverage", Information Economics and Policy, 2017, 41, 28-35. (co-authors: A. J. Garcia-Pires and H. J. Kind)

• "Sequential Negotiations: Substitutes versus Complements", Journal of Institutional and Theoretical Economics, 2016, 172 (4), 639. (co-author: B. A. Reme)

• "Upstream merger in a successive oligopoly: Who pays the price?", International Journal of Industrial Organization, 2016, 48, 143-172. (co-authors: Ø. A. Nilsen and S. A. Ulsaker)

• "Inter-firm price coordination in a two-sided market», International Journal of Industrial Organization, 2016, 44, 101-112. (co-authors: H. J. Kind and T. Nilssen)

• "Fine schedule with heterogeneous cartels: Are the wrong cartels deterred?", Journal of Competition Law and Economics, Journal of Competition Law and Economics, 2016, 12 (2), 263-27. (co-author: Sissel Jensen).

• "Farmers, Middlemen and Exporters: A Model of Market Power, Pricing and Welfare in a Vertical Supply Chain", Review of Development Economics, 2015, 19(1), 31–44, (co-authors: K. Bjorvatn and A. B. Milford).

• 'Asymmetric Price Increase in Critical Loss Analysis: A Reply to Langenfeld and Li', Journal of Competition Law and Economics, 2014, 10(3), 765-768, (co-authors: Ø. Daljord and Ø. Thomassen).

• 'Cross-border mergers and domestic wages: integrating positive 'spillover' effects and negative 'bargaining' effects', Journal of International Business Studies, 2014, 45, 450-70. (co-authors: J. Clougherty, K. Gugler and F. Szücs).

• 'From research on mergers to merger policy', International Journal of the Economics of Business, 2014, 21(1), 37-42.

• 'Abuse of collective dominance: The need for a new approach', World Competition, 2013, 36(3), 355-371 (co-authors: R. Gjendemsjø and E. H. Hjelmeng).

• 'Electricity production in a hydro system with a reservoir constraint', Scandinavian Journal of Economics, 2013, 115 (2), 575-594 (co-authors: L. Mathiesen and J. Skaar).

• 'A note on Upward Pricing Pressure: The possibility of false positives', Journal of Competition Law and Economics, 2012, 8, 881-887. (co-authors: L. Mathiesen and Ø. A. Nilsen).

• 'Rethinking minority share ownership and interlocking directorships - the scope for competition law intervention', European Law Review, 2011, 36, 837-860. (co-authors: T.S. Gabrielsen and E. Hjelmeng).

• 'Merger simulations with observed diversion ratios', International Review of Law and Economics, 2011, 31, 83-91. (co-authors: Lars Mathiesen and Øivind Anti Nilsen).

• 'Single-Product versus Uniform SSNIPs', International Review of Law and Economics, 2011, 31, 142-146. (co-author: Ø. Daljord).

• 'Semicollusion', Foundations and Trends in Microeconomics, 2010, 5(3), 153-228. (co-author: Frode Steen).

• 'Optimal merger policy: Enforcement vs. deterrence', Journal of Industrial Economics, 2009, 57, 438-456.

• 'Business models for media firms: Does competition matter for how they raise revenue?', Marketing Science, 2009, 28, 1112-1128. (co-authors: Hans Jarle Kind and Tore Nilssen).

• 'Domestic regulation and international trade', Journal of Industry, Competition and Trade, 2009, 9, 1-16. (co-authors: Øystein Foros and Hans Jarle Kind).

• 'The SSNIP test and market definition with the aggregate diversion ratio: A reply to Katz and Shapiro', Journal of Competition Law and Economics, 2008, 4(2), 263-270. (co-authors: Øystein Daljord and Øyvind Thomassen)

• 'The Economics of National Champions', European Competition Journal, 2007, 3(1), 49-61.

• 'Public versus private health care in a national health service', Health Economics, 2007, 16, 579-601. (co-author: Kurt Brekke).

• 'Managerial incentives and access price regulation', European Journal of Law and Economics, 2007, 23(2), 117-133 (co-authors: Øystein Foros and Hans Jarle Kind).

• 'Competition for viewers and advertisers in a TV oligopoly', Journal of Media Economics, 2007, 20(3), 211-233 (co-authors: Hans Jarle Kind and Tore Nilssen).

• 'Private labels, price rivalry and public policy', European Economic Review, 2007, 51, 403-424. (co-author: Tommy S. Gabrielsen).

• 'Temporary bottlenecks, hydropower and acquisitions', Scandinavian Journal of Economics, 2006, 108, 481-497, (co-author: Jostein Skaar).

• 'How to test for abuse of dominance', European Competition Journal, 2006, 2 (special issue on Article 82), 69-84, (co-author: Kenneth Fjell).

• 'National versus International Mergers in Unionized Oligopoly', RAND Journal of Economics, 2006, 37, 212-233, (co-authors: Kjell Erik Lommerud and Odd Rune Straume).

• 'Strategic Regulation Policy in the Internet', Journal of Regulatory Economics, 2006, 30, 63-84, (co-authors: Øystein Foros and Hans Jarle Kind).

• 'Hotelling in the air? Flight departures in Norway', Regional Science and Urban Economics, 2005, 35, 193-213, (co-authors: Kjell G. Salvanes and Frode Steen).

• 'Downstream merger with upstream market power', European Economic Review, 2005, 49, 717-743, (co-authors: Kjell Erik Lommerud and Odd Rune Straume).

• 'Media competition on the internet', Topics in Economic Analysis & Policy 4 (2004) Article 32, (co-authors: Pedro P. Barros, Hans Jarle Kind and Tore Nilssen).

• 'Unionized Oligopoly, Trade Liberalization and Location Choice', Economic Journal, 2003, 113, 782-800, (co-authors: Kjell Erik Lommerud and Frode Meland).

• 'Compete, collude, or both? Deregulation in the Norwegian airline industry', Journal of Transport Economics and Policy, 2003, 37(3), 383-416, (co-authors: Kjell G. Salvanes and Frode Steen).

• 'From a regulated duopoly to a private monopoly; The deregulation of the Norwegian airline industry', Swedish Economic Policy Review. 2003, 9(2), 191-222 (co-author: Frode Steen).

• 'Entry in Telecommunication: Customer Loyalty, Price Sensitivity and Access Prices', Information Economics and Policy, 2003, 15(1), 55-72 (co-author: Kjell Erik Lommerud).

• 'Access Pricing, Quality Degradation and Foreclosure in the Internet', Journal of Regulatory Economics, 22 (1) 2002, 59-83 (co-authors: Øystein Foros and Hans Jarle Kind).

• 'A public firm challenged by entry: Duplication or diversity?', Regional Science and Urban Economics, 2002, 32, 259-274 (co-author: Tore Nilssen).

• 'Trade liberalization and cartel stability', Review of International Economics, 2001, 9(2), 343-355 (co-author: Kjell Erik Lommerud).

• 'Exclusive versus common dealership' Southern Economic Journal, 1999, 66, 353-366 (co-author: Tommy S. Gabrielsen)

• 'Discount chains and brand policy', Scandinavian Journal of Economics, 1999, 101, 127-142 (co-author: Tommy S. Gabrielsen)

• 'Semicollusion in the Norwegian cement market', European Economic Review, 1999, 43, 1775-1796 (co-author: Frode Steen).

• 'Sequential horizontal mergers', European Economic Review, 1998, 42, 1683-1702 (co-author: Tore Nilssen)

• 'Programme choice and time schedule: TV news in Norway and Denmark', Journal of Economics & Management Strategy, 1998, 7, 209-235. (co-author: Tore Nilssen)

• 'The pro-competitive effect of two-part tariffs', International Journal of the Economics of Business, 1998, 5, 47-55. (co-author: Tommy S. Gabrielsen)

• 'Merger and product range rivalry', International Journal of Industrial Organization, 1998, 16, 21-42. (co-author: Kjell Erik Lommerud)

• 'Transfer pricing as a strategic device for desentralized multinationals', International Tax and Public Finance, 1997, 4, 277-290. (co-author: Guttorm Schjelderup).

• 'Domestic merger policy in an international oligopoly: The Nordic market for electricity', Energy Economics, 1997, 19, 239-253.

• 'The takeover battle for Fjord Line', Business Strategy Review, 1997, 8(3), 27-34.

• 'Judo economics reconsidered: capacity limitation, entry and collusion, International Journal of Industrial Organization, 1997, 15, 349-368.

• 'The consumer as an entrant in the Norwegian cement market', Journal of Industrial Economics, 1993, 41, 191-204.

• 'Multiproduct incumbent and a Puppy Dog entrant: Some simulations for the Norwegian cement market', International Journal of Industrial Organization, 1992, 10, 251-271.