Since 2018 Member of the Editorial Board, Energy & Environment (ISSN: 0958-305X; Thousand Oaks, CA: SAGE Publishing)
Since 2007 Editor-in-Chief, Carbon & Climate Law Review (CCLR) (ISSN: 1864-9904; Berlin: Lexxion)
2007 Executive Editor, Journal for European Environmental & Planning Law (JEEPL) (ISSN: 1613-7272; Leiden: Brill Nijhoff)
2001-2003 Editor, Finnish Yearbook of International Law (FYBIL) (ISSN: 0786-6453; Leiden: Brill Nijhoff)
Research Proposals: Agence Nationale de la Recherche, France; Agencia Estatal de Investigación, Spain; Einstein Foundation, City of Berlin, Germany; European Research Council, European Union; Flemish Research Council, Belgium; UK Research and Innovation, United Kingdom.
Referee for Cambridge University Press; Edward Elgar; Elsevier Press; Oxford University Press; and various peer-reviewed journals, including: Carbon Management; Climate and Development; Climate Law; Climate Policy; Climatic Change; Energy & Environment; Energy Policy; Energy Research & Social Science; Environmental and Resource Economics; Environmental Economics and Policy Studies; Environmental Law Review; Frontiers in Energy; Greenhouse Gas Measurement & Management; International & Comparative Law Quarterly; International Environmental Agreements: Politics, Law and Economics; International Journal of Marine and Coastal Law; International Studies Perspectives; Joule; Journal of Cleaner Production; Journal of Energy & Natural Resources Law; McGill International Journal of Sustainable Development Law and Policy; Mitigation and Adaptation Strategies for Global Change; Nature Sustainability; One Earth; Oxford Journal of World Energy Law & Business; Quantitative Finance and Economics;Review of European, Comparative and International Environmental Law; Science; Sustainability; and Transnational Environmental Law.
Monographs and Edited Volumes
- (ed.) The Green Market Transition: Carbon Taxes, Energy Subsidies and Smart Instrument Mixes. 304 pp. Cheltenham: Edward Elgar, 2017. ISBN: 978-1-78811-116-4 (with Stefan E. Weishaar, Larry Kreiser, Janet E. Milne, and Hope Ashiabor).
- (ed.) Emissions Trading in Practice: A Handbook on Design and Implementation. 195 pp. Washington, DC: World Bank, 2016 (with Felix Matthes and Duan Maosheng).
- (ed.) Climate Change and the Law. 676 pp. Dordrecht: Springer, 2013. ISBN: 978-94-007-5439-3 (with Erkki J. Hollo and Kati Kulovesi).
- (ed.) Improving the Clean Development Mechanism: Options and Challenges Post-2012. 291 pp. Berlin: Lexxion, 2011. ISBN: 978-3-86965-023-4 (with Amy Merrill and Karl Upston-Hooper).
- (ed.) Bridging the Divide in Global Climate Policy: Strategies for Enhanced Participation and Integration. 208 pp. Berlin: Lexxion, 2009. ISBN: 978-3-86965-112-5 (with Michael Rodi).
- Rechtliche Ausgestaltung von Nutzungsentgelten für globale Umweltgüter. 271 pp. Berlin: Erich Schmidt Verlag, 2006. ISBN: 3-503-09773-2 (with Nils Meyer-Ohlendorf).
Journal Articles (Selection)
- “Border Carbon Adjustments and Industrial Competitiveness in a European Green Deal.” 21 Climate Policy (2021): 1-11 (online first; with Stuart Evans, Robert A. Ritz, and Paul Sammon). https://doi.org/10.1080/14693062.2020.1856637
- “De-Risking Renewable Energy Investments in Developing Countries: A Multilateral Guarantee Mechanism.” 4(12) Joule (2020): 2627-2645 (with David Matthäus). https://doi.org/10.1016/j.joule.2020.10.011
- “COVID-19: Clinching the Climate Opportunity.” 3(4) One Earth (2020): 400-404 (with Christian Stoll). https://doi.org/10.1016/j.oneear.2020.09.003
- “The Legal and Economic Case for an Auction Reserve Price in the EU Emissions Trading System.” 26 Columbia Journal of European Law (2020): 1-34 (with Carolyn Fischer, Leonie Reins, Dallas Burtraw, David Langlet, Åsa Löfgren, Stefan Weishaar, Lars Zetterberg, Harro van Asselt, and Kati Kulovesi).
“Teaching Climate Law: Trends, Methods, and Outlook.” 32(3) Journal of Environmental Law (2020): 417-440 (with Harro van Asselt, Kati Kulovesi and Elisa Morgera).*
- “Governing Cooperative Approaches under the Paris Agreement.” 46(3) Ecology Law Quarterly (2020): 765-828. https://doi.org/10.15779/Z389G5GD97
- “Global Environmental Law: Context and Theory, Challenge and Promise.” 8(3) Transnational Environmental Law (2019): 399–403 (with Kati Kulovesi and Elisa Morgera). https://doi:10.1017/S2047102519000347
- “Designing Border Carbon Adjustments for Enhanced Climate Action.” 113 American Journal of International Law (2019): 433-481 (with Harro van Asselt, Kasturi Das, Susanne Dröge and Cleo Verkuijl). https://doi.org/10.1017/ajil.2019.22
- “Making the International Trading System Work for Climate Change: Assessing the Options.” 49 Environmental Law Reporter (2019): 10553-10580 (with Kasturi Das, Harro van Asselt and Susanne Droege).
- “Linking Heterogeneous Climate Policies (Consistent with the Paris Agreement).” 48 Environmental Law (2018:4): 647-698 (with Gilbert E. Metcalf and Robert N. Stavins).
- “Negotiating the Paris Rulebook: Introduction to the Special Issue.” 12 Carbon & Climate Law Review (2018:3): 173-183 (with Harro van Asselt and Kati Kulovesi). https://doi.org/10.21552/cclr/2018/3/3
- “Beat Protectionism and Emissions at a Stroke.” 559 Nature (2018): 321-324 (with Harro van Asselt, Kasturi Das and Susanne Dröge). https://doi.org/10.1038/d41586-018-05708-7
- “Carbon Pricing and Deep Decarbonisation.” 121 Energy Policy (2018): 185-189 (with Endre Tvinnereim). https://doi.org/10.1016/j.enpol.2018.06.020
- “Carbon Pricing and the 1.5°C Target: Near-Term Decarbonisation and the Importance of an Instrument Mix.” 12 Carbon & Climate Law Review (2018:1): 50-61 (with Endre Tvinnereim). https://doi.org/10.21552/cclr/2018/1/9
- “Linking Climate Policies to Advance Global Mitigation.” 359 Science (2018:6379): 997-998 (with Gilbert E. Metcalf and Robert N. Stavins).
- “The Trade System and Climate Action: Ways Forward Under the Paris Agreement.” 17 South Carolina Journal of International Law and Business (2017): 195-276 (with Susanne Dröge, Harro van Asselt and Kasturi Das)
- “A New Direction for US Climate Policy: Assessing the First 100 Days of Donald Trump's Presidency.” 11 Carbon & Climate Law Review (2017:1): 3-24.
- “Ambitious Climate Policy through Centralization? Evidence from the European Union.” 17 Climate Policy (2017: Supplement 1): S32-S50 (with Camilla Bausch and Benjamin Görlach).
- “The Comparative Law of Climate Change: A Research Agenda.” 24(3) Review of European, Comparative and International Environmental Law (2015): 341-352.
- “Frameworks for International Climate Cooperation: Assessing the Alternatives.” 4 Journal of International Organizations Studies (2013:1): 13-35.
- “Between Twilight and Renaissance: Changing Prospects for the Carbon Market.” 6 Carbon & Climate Law Review (2012:4): 277-290.
- “Beyond Déjà Vu: Opportunities for Policy Learning from Emissions Trading in Developed Countries.” 6 Carbon & Climate Law Review (2012:4): 291-305 (with Sonja Klinsky and Andreas Tuerk).
- “How Germany Became Europe’s Green Leader: A Look at Four Decades of Sustainable Policymaking.” 2 Solutions (2011): 51-63 (with Ralph Buehler, Arne Jungjohann, and Melissa Keeley).
- “Improving the Clean Development Mechanism Post-2012: A Developing Country Perspective.” 4 Carbon & Climate Law Review (2010:1): 76-85 (with Nhan T. Nguyen, Minh Ha-Duong, and Sandra Greiner).
- “Linking Carbon Markets: Concepts, Case Studies and Pathways.” 9 Climate Policy (2009): 341-357 (with Andreas Tuerk, Christian Flachsland, and Wolfgang Sterk).
- “Linking Existing and Proposed GHG Emissions Trading Schemes in North America.” 9 Climate Policy (2009): 373-388 (with Erik Haites).
- “Mechanisms for Linking Emissions Trading Schemes.” 9 Climate Policy (2009): 169-184 (with Erik Haites).
- “From Autonomy to Integration? International Law, Free Trade and the Environment.” 77 Nordic Journal of International Law (2008): 253-273 (with Anja Lindroos).
- “Global Climate Change and the Fragmentation of International Law.” 30 Law & Policy (2008): 423-449 (with Harro van Asselt and Francesco Sindico).
- “Das zukünftige Klimaschutz-Regime der Vereinten Nationen: Ein Wegweiser durch die Verhandlungsarchitektur.” 5 Europäisches Umwelt- und Planungsrecht (6:2007): 259-266 (with Camilla Bausch).
- “A Nutrient Quota Trading Scheme to Reduce the Eutrophication of the Baltic Sea.” 4 Journal for European Environmental & Planning Law (2007:4): 296-311 (with Karl Upston-Hooper).
- “Tracking Down the Future Climate Regime: An Assessment of Current Negotiations under the U.N.” 1 Carbon & Climate Law Review (2007:1): 4-16 (with Camilla Bausch).
- “The European Union and Climate Change: Leading the Way towards a Post-2012 Regime?” 1 Carbon & Climate Law Review (2007:1): 45-52 (with Leonardo Massai).
- “Breathing Life into the Carbon Market: Legal Frameworks of Emissions Trading in Europe” 16 European Environmental Law Review (2007:4): 96-115 (with Karoliina Anttonen and Karl Upston-Hooper).
- “Bridging the Transatlantic Divide: Legal Aspects of a Link between Regional Carbon Markets in Europe and the United States.” 7 Sustainable Development Law & Policy (2007:2): 46-52.
- “Germany: New Energy Tax – A Sign of Progress?” 44 Tax Notes International (2006): 267-269.
- “Klimagipfel in Montreal: Der Weg in eine zweigleisige Zukunft.” 17 Zeitschrift für Umweltrecht (2006:6): 291-295 (with Camilla Bausch).
- “‘Alive and Kicking’: The 1st Meeting of the Parties to the Kyoto Protocol.” 15 Review of European Community and International Environmental Law (2006): 193-201 (with Camilla Bausch).
- “Evolving Carbon Markets in the European Union – International Linkages and Lessons from Implementation (Review Essay).” 7 Yearbook of European Environmental Law (2005): 482-491.
- “Dispelling the Chimera of Self-Contained Regimes: International Law and the WTO.” 16 European Journal of International Law (2006): 857-877 (with Anja Lindroos).
- “Implementing the Kyoto Protocol in a Multidimensional Legal System: Lessons from a Comparative Assessment.” 15 Yearbook of International Environmental Law (2005): 3-79 (with Michael Rodi, Elizabeth Zelljadt and Janine Rechel).
- “Projektbezogene Mechanismen und ihre Einbindung in den europäischen Emissionshandel: Die 'Linking Directive'” 29 Zeitschrift für Energiewirtschaft (2005:1): 78-84.
- “Emissions Trading and National Allocation in the Member States: An Achilles Heel of European Climate Policy?” 5 Yearbook of European Environmental Law (2003): 113-156.
- “Betwixt Scylla and Charybdis? Effectiveness in International Environmental Law.” 13 Finnish Yearbook of International Law (2002): 129-182.
- “The Ecological Tax Reform in Germany.” 26 Tax Notes International (2000): 871-878.
Book Chapters and Articles in Edited Volumes (Selection)
- “Market Mechanisms.” In The Oxford Handbook of International Environmental Law, edited by Jacqueline Peel and Lavanya Rajamani. Oxford: Oxford University Press, forthcoming 2021.
- “Article 9 (Finance).” In A Commentary on the Paris Agreement on Climate Change, edited by Leonie S. Reins and Geert van Calster. Cheltenham: Edward Elgar, forthcoming 2021.
- “Linking Carbon Markets: Legal and Institutional Issues and Lessons for Northeast Asia.” In Carbon Market Cooperation in Northeast Asia: Assessing Challenges and Overcoming Barriers, edited by Jackson Ewing. 31-40. New York, N.Y.: Asia Society Policy Institute, 2018.
- “Linking Heterogeneous Climate Policies (Consistent with the Paris Agreement).” In International Cooperation in East Asia to Address Climate Change, edited by Robert N. Stavins and Robert C. Stowe, 49-52. Cambridge, Mass.: Harvard Project on Climate Agreements, 2018 (with Robert N. Stavins and Gilbert E. Metcalf).
- “Linking Heterogeneous Climate Policies (Consistent with the Paris Agreement).” In Market Mechanisms and the Paris Agreement, edited by Robert N. Stavins and Robert C. Stowe, 43-46. Cambridge, Mass.: Harvard Project on Climate Agreements, 2017 (with Robert N. Stavins and Gilbert E. Metcalf).
- “Article 193 TFEU (Environment).” In The Law of the European Union – A Commentary of the Treaties, edited by Christian Campbell, Peter Herzog, and Gudrun Zagel. Newark, N.J.: Matthew Bender, 2016.
- “Legal Frameworks for Linking National Emissions Trading Systems.” In The Oxford Handbook of International Climate Change Law, edited by Cinnamon P. Carlarne, Kevin R. Gray, and Richard Tarasofsky, 261-288. Oxford: Oxford University Press, 2016.
- "Transparency of Climate Change Policies, Markets and Corporate Practices." In The Oxford Handbook of Economic and Institutional Transparency, edited by Jens Forssbaeck and Lars Oxelheim. New York: Oxford University Press, forthcoming 2014 (with Thomas L. Brewer).
- "The Changing Architecture of International Climate Change Law." In Research Handbook on Climate Change Mitigation Law, edited by Geert van Calster, Wim Vandenberghe, and Leonie Reins. Cheltenham: Edward Elgar, forthcoming 2014 (with Harro van Asselt and Clarisse Kehler Siebert).
- “Germany's Ecological Tax Reform: A Retrospective.” In German Environmentalism in Transatlantic Perspective: A Multidisciplinary Approach, edited by Manuela Achilles. Basingstoke: Palgrave Macmillan, 2013.
- “Designing Environmental Taxes in Countries in Transition: A Case Study of Vietnam.” In Handbook of Research on Environmental Taxation, edited by Janet E. Milne and Mikael S. Andersen, 122-138. Northampton, Mass.: Edward Elgar, 2013 (with Michael Rodi and Kai Schlegelmilch).
- “Implementing Climate Law: Instrument Choice and Interaction.” In Climate Change and the Law, edited by Erkki J. Hollo, Kati Kulovesi and Michael Mehling, 11-30. Dordrecht: Springer, 2013.
- “Alternative Venues of Climate Cooperation: An Institutional Perspective.” In Climate Change and the Law, edited by Erkki J. Hollo, Kati Kulovesi and Michael Mehling, 111-141. Dordrecht: Springer, 2013 (with Camilla Bausch).
- “Implementing the CDM in Vietnam: Potential and Limitations.” In Improving the Clean Development Mechanism: Options and Challenges Post-2012, edited by Michael Mehling, Amy Merrill and Karl Upston-Hooper, 221-246. Berlin: Lexxion, 2011 (with Nhan T. Nguyen, Minh Ha-Duong, and Sandra Greiner).
- “Enforcing Compliance in an Evolving Climate Regime.” In Promoting Compliance in an Evolving Climate Regime, edited by Jutta Brunnée, Meinhard Doelle and Lavanya Rajamani, 194-215. Cambridge: Cambridge University Press, 2011.
- “Facing Climate Change across the Atlantic: How Far Apart are Europe and North America?” In Europe, Canada and the Comprehensive Economic and Trade Agreement, edited by Kurt Hübner, 259-273. London: Routledge, 2011.
- “Cambio Climático.” In Derecho Internacional del Medio Ambiente, edited by Francesco Sindico, Rosa Fernández Egea and Susana Borrás Pentinat, 185-209. London: CMP Publishing, 2011 (with Arturo Brandt).
- “Energy, the Environment, and Price-Based Instruments: Environmental Taxes as a Tool for Energy Sustainability and Climate Policy.” In Realising the Paradigm Shift towards Energy Sustainability: Climate Change, Technological Innovation, and the Challenge of an Optimal Instrument Mix, edited by Michael Rodi, 49-64. Berlin: Lexxion, 2010 (with Kalle Määttä).
- “Pasado, Presente y Futuro del MDL: Propuestas para una Participación Equitativa.” In Un Nuevo Marco Legal para el Cambio Climático, edited by Pilar Moraga Sariego, 93-114. Santiago: Universidad de Chile, 2009 (with Arturo Brandt).
- “Linking of Emissions Trading Schemes.” In Legal Aspects of Carbon Trading: Kyoto, Copenhagen and Beyond, edited by David Freestone and Charlotte Streck, 108-133. Oxford: Oxford University Press, 2009.
- “La Unión Europea y el Cambio Climático – Entre Ambición y Realidad.” In El cambio climático en el derecho internacional y comunitario, edited by Remiro Brotóns and Rosa M. Fernández Egea. 133-164. Bilbao: Fundación BBVA, 2009.
- “International Trade Policy in a World of Different Carbon Prices.” In Competitive Distortions and Leakage in a World of Different Carbon Prices: Trade, Competitiveness and Employment Challenges when Meeting the Post-2012 Climate Commitments in the European Union, edited by the European Parliament. 23-34. Strasbourg: European Parliament, 2008 (with Nils Meyer-Ohlendorf and Ralph Czarnecki).
- “Implementation of the Kyoto Protocol in Germany: Designing an Integrated Management Scheme for Greenhouse Gases.” In The Kyoto Protocol and Beyond: Legal and Policy Challenges of Climate Change, edited by Wybe Douma, Leonardo Massai, and Massimiliano Montini. 111-134. The Hague: T.M.C. Asser Press, 2007.
- “Energy and the Environment: The International Dimension.” In Instruments of Environmental Policy in Liberalized Energy Markets, edited by Michael Rodi. 31-48. Berlin: Lexxion, 2006.
- “European Emissions Trading and Environmental Regulation in the Member States: Irreconcilable Conflict?” In Strengthening European Environmental Law in an Enlarged Union, edited by Teresa Fajardo del Castillo, Christoph Holtwisch, and Tereza Tichá. 162-178. Aachen: Shaker, 2004.
Unpublished Reports and Policy Papers (Selection)
- Carbon Border Adjustment Mechanisms and their Economic Impact on Finland and the EU. Publications of the Government´s Analysis, Assessment and Research Activities 2020:48. 152 pp. Helsinki: Prime Minister’s Office, 2020. ISBN: 978-952-287-922-6 (with Tero Kuusi, Martin Björklund, Ville Kaitila, Kai Kokko, Markku Lehmus, Tuuli Oikarinen, Johanna Pohjola, Sampo Soimakallio and Maria Wang).
- Border Carbon Adjustments in the EU: Issues and Options. 68 pp. Brussels: European Roundtable on Climate Change and Sustainable Transition, 2020 (with Andrei Marcu and Aaron Cosbey).
- Going Beyond Default Intensities in an EU Carbon Border Adjustment Mechanism. Cambridge Working Papers in Economics 2087. 23 pp. Cambridge: University of Cambridge, 2020 (with Robert Ritz).
- Border Carbon Adjustments and Industrial Competitiveness in a European Green Deal. Cambridge Working Papers in Economics 2036. 16 pp. Cambridge: University of Cambridge, 2020 (with Stuart Evans, Robert Ritz and Paul Sammon).
- The Legal and Economic Case for an Auction Reserve Price in the EU Emissions Trading System. CESifo Working Paper No. 7903. 34 pp. Munich: CESifo, 2019 (with Carolyn Fischer, Leonie Reins, Dallas Burtraw, David Langlet, Åsa Löfgren, Stefan Weishaar, Lars Zetterberg, Harro van Asselt and Kati Kulovesi).
- Legal Nature of EU ETS Allowances. 196 pp. Luxembourg: Publications Office of the European Union, 2019. ISBN: 978-92-76-08989-6 (with Leonie Reins, Marta Ballesteros, Istvan Bart, Arne Riedel, Virginie Rouas, Matthieu Wemaëre and Benjamin Görlach).
- Governing Cooperative Approaches under the Paris Agreement. Harvard Project on Climate Agreements Discussion Paper ES 2018-8. 76 pp. Cambridge, Mass.: Harvard University, 2018.
- Achieving 1.5 Degrees in the Real World: Opportunities, Barriers and Trade-offs. 8 pp. 1.5°C Insight Brief. London: Climate Strategies, 2018 (with Ambuj D. Sagar).
- Pathways to Paris: ASEAN. MIT Joint Program Special Report. 154 pp. Cambridge, MA: MIT Joint Program on the Science and Policy of Global Change, 2018 (with Sergey Paltsev, Niven Winchester, Jennifer Morris and Kirby Ledvina).
- Pathways to Paris: Latin America. MIT Joint Program Special Report. 150 pp. Cambridge, MA: MIT Joint Program on the Science and Policy of Global Change, 2018 (with Sergey Paltsev, Niven Winchester, Jennifer Morris and Kirby Ledvina).
- Linking Heterogeneous Climate Policies (Consistent with the Paris Agreement). Harvard Project on Climate Agreements Discussion Paper ES 2017-6. 55 pp. Cambridge, Mass.: Harvard University, 2017 (with Gilbert E. Metcalf and Robert N. Stavins).
- Achieving the Mexican Mitigation Targets: Options for an Effective Carbon Pricing Policy Mix. Mexico City: Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT) and Gesellschaft für Internationale Zusammenarbeit (GIZ), 2017 (with Emil Dimanchev).
- Designing Institutions, Structures and Mechanisms to Facilitate the Linking of Emissions Trading Schemes. Report for the German Federal Environment Agency (Umweltbundesamt). 84 pp. Berlin: 2015 (with Benjamin Görlach and Ennid Roberts).
- Legal Implications of the EU-US Trade and Investment Partnership (TTIP) for the Acquis Communautaire and the ENVI Relevant Sectors that Could Be Addressed During Negotiations. Study for the European Parliament Committee on Environment, Public Health and Food Safety. Doc. IP/A/ENVI/ST/2013-09. 53 pp. Brussels, Belgium: 2013 (with Christiane Gerstetter, Andrew Eberle, and Katherine Salès).
- International Experience with Emissions Trading. Working Paper for Climate Strategies. 17 pp. Cambridge, United Kingdom: 2013 (with Tim Laing).
- Emerging Carbon Markets: Experiences, Trends & Challenges. Working Paper for Climate Strategies. 36 pp. Cambridge, United Kingdom: 2013 (with Andreas Türk, Sonja Klinsky and Xin Wang).
- Addressing the Challenge of Global Climate Change Mitigation. An Assessment of Existing Venues and Institutions. 59 pp. Berlin: Friedrich-Ebert-Stiftung, 2011. ISBN 978-3-86872-867-5 (with Camilla Bausch).
- Alternative Frameworks for International Climate Cooperation: Country Positions in the Run Up to Durban. Report for the Project Coping with Complexity in the Evolving International Climate Policy Institutional Architecture (ICPIA), Österreichischer Klima- und Energiefonds. 26 pp. Vienna, Austria: 2011 (with Andreas Türk and Antonia Baker).
- Prospects for a Transatlantic Carbon Market: What Next After the US Midterm Elections? Working Paper for Climate Strategies. 26 pp. Cambridge, United Kingdom: 2011 (with Andreas Türk and Wolfgang Sterk).
- International Trade Policy in the Context of Climate Change Imperatives. Report for the European Parliament Committee on International Trade. 18 pp. Brussels, Belgium: 2010 (with Christiane Gerstetter and Tanja Srebotnjak).
- From »Brokenhagen« to »Cancún Can!« The Cancún Climate Summit and its Significance for Transatlantic Relations. Discussion Paper for the Friedrich Ebert Stiftung. 5 pp. Washington, D.C., United States: 2010.
- Transforming Economies through Green Investment: Needs, Progress, and Policies, Report for the German Marshall Fund of the United States. 38 pp. Washington, D.C., United States: 2010 (with Aaron Best, Dominic Marcellino, Michael Perry, and Katharina Umpfenbach).
- Global Carbon Market Institutions: An Assessment of Governance Challenges and Functions in the Carbon Market. Background Paper prepared for the Department of Energy and Climate Change (DECC). 45 pp. London, United Kingdom: 2009.
- Towards a Global Green Recovery – Supporting Green Technology Markets. Atlantic Task Force Recommendations to the Policy Planning Staff of the German Federal Foreign Office. 25 pp. Berlin, Germany: Atlantische Initiative: 2009 (as Task Force Member).
- Prospects of Linking EU and US Emission Trading Schemes: Comparing the Western Climate Initiative, the Waxman-Markey and the Lieberman-Warner Proposals. Working Paper for Climate Strategies. 36 pp. Cambridge, United Kingdom: 2009 (with Andreas Türk and Wolfgang Sterk).
- Linking the EU’s Emissions Trading System to any Future US Emissions Trading Scheme. Report for the European Parliament, Policy Department Economic and Scientific Policy. 70 pp. Brussels, Belgium: 2009 (with Jason Anderson and Harro van Asselt).
- Transatlantic Policy Options for Supporting Adaptations in the Marine Arctic. Report for the European Commission Directorate General for External Relations. 30 pp. Brussels, Belgium: 2009 (with Aaron Best, Sandra Cavalieri, Mark Jariabka, Timo Koivurova, and Erik J. Molenaar).
- Addressing Leakage and Competitiveness in US Climate Policy: Issues Concerning Border Adjustment Measures. Working Paper for Climate Strategies. 82 pp. Cambridge, United Kingdom: 2009 (with Harro van Asselt and Thomas Brewer).
- Climate Change and Energy Security: Lessons Learned. 71 pp. , 2008. ISBN: 1-933942-16-9 (with Joseph E. Aldy and Camilla Bausch).
- Support for the State Environment Protection Agency (SEPA) Legislation Department in Strengthening the Legal Framework of Public Interest Litigation in China. Research Report for the Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH, GTZ-SEPA Programme Office. 44 pp. Beijing, China: 2006 (with Peter Kessler and Dora Schaffrin).
- Legal Aspects of User Charges on Global Environmental Goods. Report for the German Federal Environment Agency (Umweltbundesamt). 258 pp. Dessau, Germany: 2006 (with Nils Meyer-Ohlendorf, Astrid Epiney and Stefan Klinski).