T. Marauhn and A.-M. B?hringer, “Climate Policy after Copenhagen. The Future of Climate Protection according to International Law,” In: J. Gundel and K. W. Lange, Eds., Climate Policy after Copenhagen—International Instruments and National Implementation, Mohr Siebeck, Tübingen, 2011, pp. 1-6.
 R. Schüle and W. Sterk, “Linking Domestic Trading Schemes and the Evolution of the International Climate Regime Bottom-Up Support of Top-Down Processes? Introduction to the Special Issue of MITI,” Mitigation and Adaption Strategies for Global Change, Vol. 14, No. 5, 2009, pp. 376-378. doi:10.1007/s11027-009-9182-9
 M. Mace, I. Miller, C. Schwarte, J. Anderson, D. Broekhoff, R. Bradley, C. Bowyer and R. Heilmayr, “Analysis of the Legal and Organizational Issues Arising in Linking the EU Emissions Trading Scheme to Other Existing and Emerging Emissions Trading Schemes,” Foundation for International Environmental Law and Development, London, Institute for European Environmental Policy In- stitute, Brussels, World Resources Institute, Washington, 2008.
 C. Flachsland, R. Marschinski and O. Edenhofer, “Global Trading versus Linking: Architectures for international Emission Trading,” Energy Policy, Vol. 37, No. 5, 2009, pp. 1637-1647. doi:10.1016/j.enpol.2008.12.008
 J. Jaffe and R. Stavins, “Linkage of Tradable Permit Systems in International Climate Policy Architecture (Discussion Paper 08-07),” The Harvard Project on International Climate Agreements, Cambridge, 2008. doi:10.3386/w14432
 J. Cao, “Beyond Copenhagen: Reconciling International Fairness, Economic Development and Climate Protection (Discussion Paper 10-44),” The Harvard Project on International Climate Agreements, Tsinghua University, Beijing, 2010.
 J. Onigkeit, N. Anger and B. Brouns, “Fairness Aspects of linking the European emissions Trading Scheme under a Long-Term Stabilization Scenario for CO2 Concentrations,” Mitigation and Adaption Strategies for Global Change, Vol. 14, No. 5, 2009, pp. 477-494. doi:10.1007/s11027-009-9177-6
 S. Monjon and P. Quirion, “Addressing Leakage in the EU ETS: Border Adjustment or Output-Based Allocation?” Ecological Economics, Vol. 70, No. 11, 2011, pp. 1657-1971. doi:10.1016/j.ecolecon.2011.04.020