- &quot; Responding to New Needs through Codification and Progressive Development &quot; (discurso de apertura), en Multilateral Treaty-Making: The Current Status of Challenges to and Reforms Needed in International Legislative Process, ed. V. Gowlland-Debbas, Kluwer, La Haya, 2000.
- &quot; Responding to New Needs through Codification and Progressive Development &quot; (Keynote Address), in V. Gowlland-Debbas ed., Multilateral Treaty-Making: The Current Status of Challenges to and Reforms Needed in International Legislative Process, Kluwer, The Hague, 2000.