• The EU needs transparent oil data and enhanced coordination; together with McWilliams, B. and G. Zachmann, May 2022, Bruegel
• How to weaken Russian oil and gas strength; together with Hausmann, R., A. Ockenfels, U. Schetter, S. Tagliapietra, G.B. Wolff and G.Zachmann; April 2022, Science
• EU risks letting Putin’s gas divide-and-rule strategy win; together with S. Tagliapietra, G. Zachmann; 29 April 2022; Euractiv
• Cutting Putin’s energy rent: ‘smart sanctioning’ Russian oil and gas; together with Hausmann, R., A. Ockenfels, U. Schetter, S. Tagliapietra, G.B. Wolff and G.Zachmann; April 2022, Bruegel
• Policy Brief: The future of natural gas in the EU, 02 December 2021, Europeum
• Der Triumph gehört Moskau, together with Reinhard Bütikofer, 17 October 2021, Die Welt
• Navalny & Germany’s NS2 Dillemma; 7 September 2020; Natural Gas World
• Unpicking the Russia-Ukraine Agreements, 16 January 2020, Natural Gas World
• Critical months ahead of Nord Stream 2, together with M. Kubiak, 14 August 2019, Natural Gas World
• Central and East European gas market and new supply options, presentation at European Gas Conference, Norwegian Petroleum Society, Stavanger 28 May 2019
• Energy Union and Russian gas, presentation at EPP Group, Warszawa, 7 March 2019
• Bulgaria: Torn in two ways, 18 July 2019, Natural Gas World 
• Balkan pride and pipelines, 7 May 2018, Natural Gas World
• Everyone wants integration, interviewed by Z. Rokita, Aspen Review, 04/2018
• Nord Stream 2 & questions about gas markets, policy & unity in the EU, public hearing at AFET Committee, European Parliament, Brussels, 31 January 2017,
• Security of gas supply: different risks, interests & tools proposed – what role for the EU?, public hearing at ITRE Comitee, European Parliament, Brussels, 23 May 2016 
• ‘Cutting Putin’s energy rent: ‘smart sanctioning’ Russian oil and gas', in cooperation with Hausmann, R., A. Ockenfels, U. Schetter, S. Tagliapietra, G.B. Wolff and G. Zachmann (2022), Working Paper 05/2022, Bruegel
• Winds of Change. Challenging Future for Russian Gas, in: The Future of Natural Gas. Markets & Geopolitics”, ed. Silvia Colombo, Mohamed El Harrak and Nicolò SartoriIstituto Affari Internazionali, OCP Policy Center and Lenthe Publishers/European Energy Review, Rome – Rabat 2016
• Great Expectations. LNG on the European Gas Market, OSW, Warsaw, April 2016
• Nord Stream 2: policy dilemmas and the future of EU gas market, NUPI, Oslo, February 2016
• The case against Nord Stream 2, Energy Post, November 2015
• What a European gas market might mean, co-authored with Georg Zachmann, European Voice, December 2014
• Rebalancing the EU-Russia-Ukraine gas relationship, co-authored with Georg Zachmann, Bruegel, Brussels, December 2014,
• Putin’s gas gambit: what’s next after South Stream, Energy Post, December 2014
• End of Nabucco – end of Southern Gas Corridor?, Energy Post, June 2014
• How the EU should deal with the Ukraine gas crisis, Energy Post, June 2014,
• Too high and too low: The problems with energy prices in the EU, OSW, Warsaw, December 2013 http://www.osw.waw.pl/en/publikacje/osw-commentary/2013-12-06/too-high-and-too-low-problems-energy-prices-eu
• Similar or diffrent? Energy security policy in CEE countries, CSM, Warsaw, 2012, http://csm.org.pl/pl/biuletyn-europy-srodkowej-i-wschodniej 
• The European Union's external energy policy and its relations with its neighbours to the East, in: Baltic Rim Economies, December 2011
• What does energy solidarity mean?, in: Green, safe, cheap: Where next for EU energy policy? Centre for European Reform, London 2011
• The EU internal market – a stake or a tool in European-Russian gas relations. A case of new member states gas policy, in cooperation with W. Ramsay, Actuelles d’ifri, IFRI, Paris 2011 & OSW Commentary, Warsaw 2011
• Between energy security and energy market integration, together with Z. Brunarska, A. Jarosiewicz and I. Wisniewska, ed. A. Loskot-Strachota, OSW Report, Warsaw 2011
• OSW answer to EC DG ENER Public consultation on The External Dimension of the EU Energy Policy, in cooperation with Z. Brunarska, A. Jarosiewicz and I. Wisniewska, Warsaw 2011
• Rethinking the external dimension of the European Energy Policy, OSW Report, Warsaw 2011
• An Azeri-Turkish deal on gas - a partnership renewed?, Edito Energie, IFRI, Paris 2010
• Nord Stream on the liberalising EU gas market, together with Lukasz Antas, OSW Policy Brief, Warsaw 2010
• Gazprom's expansion in the EU: co-operation or domination? (second edition), OSW Report, Warsaw 2009
• January gas crisis and the complexity of Russian-Ukrainian energy relations, ISS Opinion, EUISS, Paris 2009
• The Baltic Sea as the most important corridor for Russia’s oil exports, The Baltic Rim Economies 6/2008, Pan-European Institute, Turku School of Economics, Turku 2008
• Chapters 5 and 6 (together with Emmanuel Bergasse and Elena Rakova) in: The economic aspects of the energy sector in CIS countries - CASE, ECONOMIC PAPERS no. 327, European Commission, Brussels 2008
• Nabucco vs. South Stream - Rivalry over Balkan Gas Pipelines, OSW Commentary, Warsaw 2008
• Gazprom's expansion in the EU: co-operation or domination? (together with Katarzyna Pelczynska-Nałęcz), OSW Report, Warsaw 2008
• Ropa, Gaz I Wielka Gra w regionie kaspijskim (Oil, Gas and the Great Game in Caspian region), Okręt Koszykowa, OSW/PWN, Warszawa 2007
• The NEGP: Strategic interests and number of unknowns, in: Philip Kazin (red), Baltic Mosaic 2006, Baltic Research Center, St Petersburg 2006
• The Russian Gas for Europe, OSW Report, Warsaw 2006
• Turkey - an energy transit corridor to the EU? – OSW Studies, Warsaw 2005
• Security of Russian Gas Supplies to the EU - the Qestion of Infrastructural Connections, OSW Policy Brief,Warsaw 2005
• Export potential of the post-Soviet region, in: The resource wealth burden - oil and gas sectors in the former USSR, (ed. A. Loskot), OSW Studies, Warsaw 2003

Shorter texts:

• Nord Stream and Gazprom and the liberalisation of the EU gas market, co-authored with Lukasz Antas, EUobserver, 30.03.2010, Journal of Turkish Weekly, 7.04.2010
• Gazprom: Changing fortunes and a changing strategy in the EU?, EurActiv.com, 19.03.2010
• Is the EU in danger of losing Azeri gas?, European Voice, 10.04.2009
• Unia mądra po szkodzie, Tygodnik Powszechny, 17.02.2009
• Nadzieja w Nabucco, Tygodnik Powszechny, 18.06.2008
• Kaukaski łącznik: gra o surowce, Tygodnik Powszechny, 04.06.2007
• Projekt stulecia, Tygodnik Powszechny, 24.07.2006