« Le droit international antidopage», Colloque de Paris Nanterre, Société Française pour le droit international, sous la direction de Franck Latty et Mathias Forteau, Ed. Pedone, 2025

“Foreword: The 1970 UNESCO and 1995 UNIDROIT Conventions on Stolen or Illegally Transferred Cultural Property: A Commentary, Vrdoljak, Ana Filipa; Jakubowski, Andzej ; Chechi, Alessandro (eds), Oxford : Oxford University Press, (Oxford Commentaries on International Cultural Heritage Law), 2024, ix-xii.

“The Inner Workings of the World Court for the Production of Its Decisions”, in New Trends in International Law: Festschrift in Honour of Judge Hisashi Owada, ed. by Chia-Jui Cheng. Leiden; Boston : Brill, 2024, 115-135.

“The Growth of Regional Courts and the Judicial Settlement of Inter-State Disputes in Africa.” In By Peaceful Means : International Adjudication and Arbitrations : Essays in Honour of David D. Caron, Brower, Charles N. ; Donoghue, Joan E. ; Murphy, Cian ; Payne, C. Cymie R. ; Shirlow, Esmé R., Ed. Oxford : Oxford University Press, 2024, 179-194.

“International Judicial Settlement” in 150 Years of Contributing to the Development of International Law, Livre du sesquicentenaire de l'Institut de droit international Justitia et Pace (1873-2023), ed. by Kohen Marcelo; van Heijden, Iris, Paris, Pedone, 2023, 295-316.

“Judge Antônio Augusto Cançado Trindade: An unwavering quest for international justice and for the universalization and humanization of international law”, Leiden Journal of International Law, Volume 36, Issue 2 (2023), pp. 1–6, Ed. Cambridge University Press. 

“Article 1 : Definition of Cultural Heritage.” In The 1972 World Heritage Convention : A Commentary, F. Francioni, F. Lenzerini, Federico, Ed. Oxford : Oxford University Press 2023, 2nd Ed., 30-49.

“The Chorzow Factory Case and the Protection of Industrial Property under International Law” in The Transformation of Private Law – Principles of Contract and Tort as European and International Law: A Liber Amicorum for Mads Andenas (ed :Maren Heidemann), Springer, 2023.

“Why International Law Matters : Inaugural McNair Lecture”, London, 5 May 2022.” McNair International Publications, 5 May, 2022.

“Interview : In Conversation with Judge Abdulqawi Ahmed Yusuf.” Max Planck Yearbook of United Nations Law, Vol. 26, 3-11, 2022 (with S. Venkatesh).

“The Rule of Law at the International Level : Evolution and Challenges.” Proceedings of the American Society of International Law, Vol. 115, 215-223, 2021

“The Charter of the United Nations After 75 Years: Personal Reflections; la Charte des Nations Unies après 75 ans : réflexions personnelles” in United Nations Chronicle, 2020, 10 July.

“The Contribution of the ILC to the Evolution of International Law ‘Keynote Address’”, in Seventy Years of the International Law Commission: Drawing a Balance for the Future (United Nations), Brill 2020, 452-460.

“Engaging With International Law” in International and Comparative Law Quarterly (ICLQ), 2020, vol. 69, n 3, pp. 505-519.

“Foreword – Italian Colonization”  in Political and legal aspects of Italian colonialism in Somalia (eds. : Elena Carpanelli, Tullio Sovazzi), G. Giappichelli Editore, 2020.

“Concluding Remarks” in General Principles of International Law, in General Principles and the Coherence of International Law, Andenas et al (eds.), Ed. Leiden, Boston : Brill Nijhoff, 2019, 448-457.

“Reforming International Investment Arbitration: A Plea for a more Institutionalized and Coherent System” in ICC Dispute Resolution Bulletin, 2019, issue 2, 20-25.

« Face à Face : Interview with President Yusuf, President of the International Court of Justice.” In Law and Practice of International Courts and Tribunals, 2019, vol. 18, no. 3, 267-278. 

“Compulsory Jurisdiction of the Court Under the Optional Clause”, in New Challenges to International Law, a View from the Hague, ed. by Hoogstraten, Leiden : Boston, Brill Nijhoff, 2018, 8-13.

“Keynote Speech: Balancing the Rights and Obligations of States and Investors: Challenges Facing LDCs” in Legal Assistance to Make Foreign Investment Work Better for Sustainable Development in the Least Developed Countries, New York,  United Nations Office of the High Representative for the Least Developed Countries, Landlocked Developing Countries and Small Island Developing States, 2017.

“A Contrario Interpretation in the Jurisprudence of the International Court of Justice,” Canadian Journal of Comparative and Contemporary Law, vol. 3, no. 1, 1-18, 2017 (with D. Peat)

“The Contribution of Arbitration to the Rule of Law : The Experience of African Countries”, in International Arbitration and the Rule of law : Contribution and Conformity. Kluwer Law International, 2017, 27-34.

«Le droit des peuples à disposer d’eux-mêmes : ne sert qu’une fois» in Dictionnaire des idées reçues en droit international, Collectif en clin d'œil amical à Alain Pellet, Paris, Pedone, 2017, 175-180.

“Unconstitutional Change of Government and the Public Law of Africa: Outlawing Coups d’Etat in Africa”, in The Pursuit of a Brave New World in International Law: Essays in Honour of John Dugard, Tladi, Maluwa and du Plessis (eds.), Boston : Brill/Nijhoff, 2017, 303-320.

« L’Etat, le Coup d’Etat et l’Union Africaine », in Faut-il prendre le droit international au sérieux ? Journée d'études en l'honneur de Pierre Michel Eisemann, Paris, Pedone, 2016, 67-75.

“The Emergence of an African Public Law and Its Potential Impact on International Law”, African Yearbook of International Law, 20132014, vol. 20, pp. 141155.

“Was There Something Missed in the Decolonization Process in Africa?”, Keynote address in African Yearbook of International Law, 20132014, vol. 20, pp. 217222.

“Precedent & Jurisprudence Constante (AES v. Argentina, ICSID Case No. ARB/02/17)” (with G. Yusuf), 50th Anniversary of ICSID: An Overview of Landmark International Investment Law Cases, M. Kinnear et al. (eds.), 2016; 71-81

“The Public Law of Africa and International Law: Broadening the Scope of Application of International Rules and Enriching Them for Intra-Africa Purposes”, in Shielding Humanity : Essays in International Law in Honour of Judge Abdul G. Koroma, Charles Chernor Jalloh & Olufemi Elias (eds.), Leiden : Brill Nijhoff, 2015, 513-53.

“From Reluctance to Acquiescence: The Evolving Attitude of African States Towards Judicial and Arbitral Settlement of Disputes”, in Leiden Journal of International Law, 2015, vol. 28, pp. 605621.

“The Progressive Development of Peoples’ Rights in the African Charter and in the Case Law of the African Commission on Human and Peoples’ Rights”, in International Law for Common Goods: Normative Perspectives on Human Rights, Culture and Nature, ed. by F. Lenzerini and A. F. Vrdoljak (eds.), Oxford, Portland: Hart, 2014, 41-60.

“Is there an African Uti Possidetis Juris?”, Zanzibar Yearbook of Law, 2014.

“Diversity of Legal Traditions and International Law: Keynote Address”, Cambridge Journal of International and Comparative Law, vol. 2, no 4, 681-703, 2013. 

“Protocole portant amendements au protocole portant statut de la Cour africaine de Justice et des droits de l’homme” In African Yearbook of International law, vol. 20, 479-527, 2013. 

“La Corne de l’Afrique, Fragmentation ou Intégration?”, Aquilon: Revue en ligne de l’Association des Internationalistes, No. 9, February 2013.

“Shepherding the Conclusion of Complex International Conventions: the Role of the Chairperson in the Negotiations on Cultural Diversity”, in Law, Politics and Rights: T. Maluwa (ed.), Essays in Memory of Kader Asmal, Leiden, Nijhoff, 2013.

“Human Rights: a Third World perspective”, EUI Working Papers, Academy of European Law, Distinguished Lectures of the Academy, AEL 2013/1.

“L’influence des Etats africains sur la formation des règles relatives à la zone économique exclusive” in L’Afrique et le droit international: variations sur l’organisation internationale/Africa and International Law: Reflections on the International Organization, Liber Amicorum Raymond Ranjeva, M. Kamga, M. M. Mbengue (eds.), Paris, Pedone, 2013.

“The International Court of Justice (ICJ) and the Development of Human Rights Law: From Collective Rights to Individual Rights” (in: La tutela dei diritti umani e il diritto internazionale: XVI Convegno, Catania, 23-24 giugno 2011, by Adriana Di Stefano, Rosario Sapienza. Editoriale Scientifica, 2012, 573-582.)  

“The Role That Equal Rights and Self-Determination of Peoples can Play in the Current World Community”, in Realizing Utopia: The Future of International Law, ed. by A. Cassese, Oxford University Press, 2012, 375-391. 

“Walking the Road He Paved: A Tribute to Antonio Cassese”, G. Acquaviva and G. Pinzauti (eds.), Journal of International Criminal Justice, Vol. 10, Issue 5, 2012; 1421-1426.

“The Notion of ‘Armed Attack’ in the Nicaragua Judgment and its Influence on Subsequent Case Law”, Leiden Journal of International Law, Vol. 25, Issue 2, 2012; 461-470.

“The Emergence of Judicial Institutions for Inter-State Dispute Settlement in Africa”, African Yearbook of International Law, vol. 19, 2011-2012; 279-294 (with Y. Daijo). 

“The Role of the Chairperson in Multilateral Treaty-Making Negotiations : The UNESCO Convention on Cultural Diversity” in African Yearbook of International Law, vol. 19, 229-275, 2011 (with Y. Daijo).

“Article 1: Definition of Cultural Heritage”, in The 1972 World Heritage Convention: A Commentary, F. Francioni, F. Lenzerini, Ed. Oxford, Oxford University Press, 2008, 23-50.

“TRIPS : Background, Principles and General Provisions” in C. M. Correa, A. A. Yusuf (eds.) Intellectual Property and International Trade : The TRIPS Agreement ; Kluwer Law International, 2008, 3-21.

“La nozione di ‘Beni Culturali sotto Protezione Rafforzata’ e il ruolo dei Comitati dell’UNESCO per la protezione del patrimonio culturale: dalla Convenzione del 1972 al Secondo Protocollo del 1999”, (with L. Cavicchioli), in P. Benvenuti and R. Sapienza (eds.), La Tutela Internazionale dei Beni Culturali nei Conflitti Armati, Milan, Giuffré, 2007; 55-73.

“UNESCO Standard setting Activities on Bioethics: Speak Softly and Carry a Big Stick”, in F. Francioni (ed.), Biotechnologies and International Human Rights, Oxford, Hart, 2007; 85-96.

“La coordination des actions dans le système des Nations Unies”, in R. Chemain and A. Pellet (eds.), La Charte des Nations Unies, constitution mondiale ?, Paris, Pedone, 2006; 89-94.

“Cultural Rights as Collective Rights in International Law”, in K. Koufa (ed.), Multiculturalism and International Law: 2004 International Law Session, Thessaloniki Institute of Public International Law and International Relations, Athens, Sakkoulas, 2006; 49-71.

“The UNESCO Declarations on Bioethics: Emerging Principles and Standards of an International Biolaw”, in N. Boschiero (ed.), Bioetica e Biotecnologie nel Diritto Internazionale e Comunitario, Turin, Giappichelli, 2006; 129-139.

“Le Conseiller juridique d’une organisation internationale face à la pratique”, in Société française pour le droit international, La pratique et le droit international, Colloque de Genève, Paris, Pedone, 2004; 253-257.

“The Right of Intervention by the African Union: A New Paradigm in Regional Enforcement Action”, African Yearbook of International Law, Vol. 11, 2003; 3-21.

“Government Collapse and State Continuity: The Case of Somalia”, in Italian Yearbook of International Law, Vol. 13, 11-33, 2003. 

“Developing Countries and the Multilateral Trade Rules: The Continuing Quest for an Equitable Playing Field”, in L. Boisson de Chazournes and V. Gowlland Debbas (eds.), The International Legal System in Quest of Equity and Universality, Liber Amicorum Georges AbiSaab, The Hague, Nijhoff, 2001; 389-409.

“The Role of the Legal Adviser in the Reform and Restructuring of an International Organization ⎯ The Case of UNIDO”, in United Nations Office of Legal Affairs, Collection of Essays by Legal Advisers of States, Legal Advisers of International Organizations and Practitioners in the Field of International Law, Sales No. E/F/S.99.V.13, New York, United Nations, 1999; 329-350.

“The U.N. Convention on Biological Diversity”, in N. Al-Nauimi and R. Meese, International Legal Issues Arising Under the United Nations Decade of International Law: Proceedings of the Qatar International Law Conference (22-03-1994; Doha), The Hague, Nijhoff, 1995; 1163-1195.

“Intellectual Property Protection in the Countries of Africa” in International Journal of Technology Management, Vol. 10, 1995; 269-292.

“Reflections on the Fragility of State Institutions in Africa” in African Yearbook of International Law, Vol. 2, 3-8, 1994.

“International Law and Sustainable Development : The Convention on Biological Diversity” in African Yearbook of International Law, Vol. 2, 109-137, 1994. 

“Intellectual Property Protection and International Trade : Exhaustion of Rights Revisited.” World Competition : Law and Economics Review, Vol. 16, No. 1, 115-131, 1992 (with A. Moncayo van Hase).

“Le Transfert de Technologie”, in Droit international: bilan et perspectives, Bedjaoui Mohammed, (ed.) Paris, Pedone, UNESCO 1991, International law: Achievements and Prospects, Paris, UNESCO, 1991, vol. 2, 739-755.

“Developing Countries and Trade-Related Aspects of Intellectual Property Rights.” In Uruguay Round : Papers on Selected Issues : UNCTAD/UNDP Projects of Technical Assistance to Developing Countries for Multilateral Trade Negotiations. New York : United Nations, 1989, 185-201.

“The Legal Framework for Stable, Remunerative and Equitable Commodity Prices in International Trade” in D. Dicke and E.U. Petersmann (eds.), Foreign Trade in the Present and a New International Economic Order, Fribourg, University Press Fribourg, 1988; 122-162.

« L’élaboration d’un code international de conduite pour le transfert de technologie: bilan et perspectives », Revue générale de droit international public, Vol. 88, Issue 4, 1984; 781-824.

“Differential and More Favourable Treatment of Developing Countries in International Trade: The GATT Enabling Clause”, Journal of World Trade Law, Vol. 14, Issue 6, 1980; 488-507.

“Towards a New Legal Framework for Marine Research: Coastal State Consent and International Coordination”, Virginia Journal of International Law, Vol. 19, Issue 2, 1979; 411-429.

“Mercenaries in the Law of Armed Conflict” in A. Cassese (ed.), The New Humanitarian Law of Armed Conflict, Naples, Editoriale Scientifica, 1979, 113-127.