  | Mattioli, P. (23 April 2024). Challenges ahead for the DSA: compliance at risk without enhanced cooperation among Digital Services Coordinators [Paper presentation]. Workshop on coherence in multi-level orders, Oslo, Norway. |
 | Van Cleynenbreugel, P., & Mattioli, P. (2023). Digital Services Coordinators and other competent authorities in the Digital Services Act: streamlined enforcement coordination lost? ORBi-University of Liège. https://orbi.uliege.be/handle/2268/313936. |
 | Mattioli, P. (11 May 2023). A new narrative of Article 267 TFEU: towards national competent authorities as European courts [Paper presentation]. Echoes of the Past, Prospects for the Future: 60 years of EU legal studies at Liège, Belgium. |
  | Mattioli, P. (2023). Contested courts: from national administrative bodies to national regulatory authorities. Revue de la Faculté de Droit de l'Université de Liège.  Editorial reviewed |
 | Mattioli, P. (2023). EU Health Ambitions Beyond Limited Competence and Treaty Paralysis [Paper presentation]. The 2023 Annual Max Planck European Law Group Conference on the Past and Future of European Law, Frankfurt am Main, Germany, Germany. |
 | Mattioli, P. (2023). Institutional balance rescaled? The role of soft law in shifting the balance of powers in the EU administrative space [Paper presentation]. Doctoral Workshop: The interaction between the sources of European Union law. |
 | Mattioli, P. (2023). The risks of the interaction between soft and hard law without adequate systems of control. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/314254. |
 | Mattioli, P. (2023). EU institutional design of Member States’ authorities responsible for medicinal products: still room for improvement. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/314111. |
 | Mattioli, P. (2023). EU Health Ambitions Beyond Limited Competences and Treaty paralysis. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/314340. |
 | Mattioli, P. (2023). A new narrative of Article 267 TFEU: towards national competent authorities as European courts [Paper presentation]. EU Legal Studies Institute's 60th Anniversary. |