@inproceedings{Deligny:20260+, author = "Deligny, Olivier", title = "{The science of ultra-high energy cosmic rays after 20 years of operation of the Pierre Auger Observatory}", doi = "10.22323/1.485.0104", booktitle = "Proceedings of The European Physical Society Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2025)", year = 2026, volume = "485", pages = "104" }