“Transforming governance and institutions for global sustainability: key insights from the Earth System Governance Project”, Current Opinion in Environmental Sustainability, vol. 4, no. 1, pp. 51 - 60, 2012.
, “The European Union and the External Dimension of Sustainable Development: Ambitious Promises But Uncertain Outcomes”, in The Effectiveness of International Organizations: Policy and Politics, London: Routledge, 2008.
,