« Collective Security Revisited in Light of the Flurry Over UN Reform: An International Law Perspective », in V. Chétail (dir.), Conflits, sécurité et coopération/Conflict, Security and Cooperation. Liber amicorum Victor-Yves Ghebali, Bruxelles, Bruylant, 2007, pp. 251-277

« Collective Security Revisited in Light of the Flurry Over UN Reform: An International Law Perspective », in V. Chétail (dir.), Conflits, sécurité et coopération/Conflict, Security and Cooperation. Liber amicorum Victor-Yves Ghebali, Bruxelles, Bruylant, 2007, pp. 251-277