“Est-ce que l’état de nécessité est un principe de droit international coutumier?” 2007/1 Revue belge de droit international, pp. 53-89;
“Chapitre 30.7 : Etat de nécessité”, P. Bodeau, J. Crawford, A. Pellet, S. Szurek (eds.), Le droit de la responsabilité internationale, Paris, Pedone, (forthcoming and also to be translated into English and published with Oxford University Press);
“Article 42: Validity and Continuation in Force of Treaties”, O. Corten & P. Klein (eds.), The Vienna Conventions on the Law of Treaties: Article by Article Commentary, 2nd ed., Oxford University Press, 17p., (co-author Marcelo Kohen);
“Article 45: Loss of a Right to Invoke a Ground for Invalidity, Terminating or Withdrawing from or Suspending the Operation of a Treaty”, O. Corten & P. Klein (eds.), The Vienna Conventions on the Law of Treaties: Article by Article Commentary, 2nd ed., Oxford University Press, 28p., (co-author Marcelo Kohen)
