Olivier van der Haegen, Hakim Boularbah, Anaïs Mallien, "Challenging and Enforcing Arbitration Awards 2022", Global Arbitration Review, GAR Insight, 2022
Olivier van der Haegen, François Cuvelier, "Les clauses d’arbitrage et de médiation : questions choisies, Modes amiables de règlement des conflits | Minnelijke geschillenoplossing, Journal des juges de paix, Die Keure La Charte (Dossier 32), 2021, pp. 1-132
Olivier van der Haegen, François Cuvelier, "Le point de départ du délai pour introduire une action en annulation contre une sentence arbitrale obtenue par fraude", Journal des Tribunaux, 2021/26, n° 6864, 2021, pp. 509-512
Olivier van der Haegen, Claire Larue, "Belgium", in Does a Right to a Physical Hearing Exist in International Arbitration?, The ICCA Reports No. 10, International Council for Commercial Arbitration (ICCA), 2020
Olivier van der Haegen, Hakim Boularbah, Jasmine Rayée, "Belgium: Applicable requirements as to form of arbitral awards", in Challenging and Enforcing Arbitration Awards 2020, Global Arbitration Review, 2020
Olivier van der Haegen, Hakim Boularbah, Jasmine Rayée, "Belgium: Applicable requirements as to form of arbitral awards", in Challenging and Enforcing Arbitration Awards 2019, Global Arbitration Review, 2019
Olivier van der Haegen, Back to the CJEU’s Gazprom judgment: anti-suit injunctions, arbitration and Brussels I, B-Arbitra, 2016/2, 2016, pp. 151-185
Olivier van der Haegen, "European Public Policy in Commercial Arbitration: Bridge over Troubled Water?", Maastricht Journal of European and Comparative Law, Volume 16, Issue No. 4, 2009, pp. 449-476
Olivier van der Haegen, M.-C. Van den Bossche, "Procedural issues: annulment, recognition and enforcement of investment treaty awards (ICSID and non-ICSID)", in International Arbitration and EU Law (José Rafael Mata Dona, Nikos Lavranos eds.), Edward Elgar Publishing Ltd., Chapter 16, 2021, pp. 360–390
Olivier van der Haegen, Claire Larue, "Les articles 1679 et 1717, paragraphe 5, du Code judiciaire : l’obligation en droit de l’arbitrage de soulever une irrégularité en temps utile", in Les MARCs, CJJB, Conférence du jeune barreau de Bruxelles, Larcier, 2021
Olivier van der Haegen, Maria Clara Van den Bossche, Anaïs Mallien, "Enforcement of Investment treaty awards against sovereign states in a landscape of sovereign immunity", in Enforcement of Investment Treaty Arbitration Awards, Globe Law and Business Ltd, The Publishers, 2021
Olivier van der Haegen, Hakim Boularbah, Jens De Winne, Jasmine Rayée, "Enforcement of Judgments 2020 – Law and Practice", in Chambers & Partners Global, 2020
Olivier van der Haegen, Maria Clara Van den Bossche, "Procedural issues: annulment, recognition and enforcement of investment treaty awards (ICSID and non-ICSID)", in International Arbitration and EU Law (José Rafael Mata Dona, Nikos Lavranos eds.), Edward Elgar Publishing Ltd, 2020
Olivier van der Haegen, Maria Clara Van den Bossche, Anaïs Mallien, "Enforcement of Investment Treaty Arbitration Awards, Sovereign immunities and investor-state awards", Globe Law and Business Ltd, The Publishers, 2020
Olivier van der Haegen, Hakim Boularbah, Jens De Winne, Jasmine Rayée, "Enforcement of Judgments 2019 – Law and Practice", in Chambers & Partners Global, 2019
Olivier van der Haegen, Hakim Boularbah, "Questions stratégiques liées aux clauses prévoyant une procédure préalable à l'arbitrage", in La stratégie dans l'arbitrage international, Wolters Kluwer, 2017, pp. 33-54
Olivier van der Haegen, Françoise Lefèvre, "Arbitration and Brussels I Regulation: Before and After West Tankers”, in Hommage à Guy Keutgen, Cepani, Bruxelles, Bruylant, 2011, p. 245 et seq.