together with M. G. Kohen/S. Breau (eds.), State Practice Regarding State Immunities/La Pratique des Etats concernant les Immunités des Etats (2006)
together with F. Weiss, A. Kumin, Recht der Europäischen Union (2nd edition 2019)
La neutralité permanente de l’Autriche et le Traité de Lisbonne, in E. Brosset/C. Chevallier-Govers/V. Edjaharian/C. Schneider (eds.) Le Traité de Lisbonne. Reconfiguration ou déconstitutionnalisation de l’Union européenne 313-337 (2009)
The Provisional Application of the Energy Charter Treaty, in C. Binder/U. Kriebaum/A. Reinisch/S. Wittich (eds.), International Investment Law for the 21st Century: Essays in Honour of Christoph Schreuer 593-607 (2009)
together with Isabelle Buffard, De la responsabilité à la prévention des dommages: les travaux de la Commission du droit international des Nations Unies, in Y. Kerbrat/S. Maljean-Dubois/R. Mehdi (eds.), Le droit international face aux enjeux environnementaux,145-164 (2010).
together with I. Buffard, Obligations of Prevention and the Precautionary Principle, in J. Crawford/A. Pellet/S. Olleson (eds.), The Law of International Responsibility 521-534 (2010)
Report on the topic: “Military assistance on request” at the Rhodes Session of the Institut de Droit International, September 2011
Historical Background to the Convention, in: Roger O’Keefe, Christian Tams (ed.s), The United Nations Convention on Jurisdictional Immunities of States and Their Property (2013). 1 – 12.
together with G. Novak, State Succession in Respect of Treaties in: Duncan B. Hollis (ed.) The Oxford Guide to Treaties, (2012) chapter 16.
Refugees at Sea: States in Conflict between Obligation and Discretion, in: Europäisches Journal für Minderheitenfragen, European Journal of Minority Studies, vol 11, No 1 – 2 (2018), 50 – 73.
