@article{Saveliev:2025v/, author = "Saveliev, Andrey and Aerdker, Sophie and Alves Batista, Rafael and Becker Tjus, Julia and Di Marco, Gaetano and Dörner, Julien and Kampert, Karl-Heinz and Merten, Lukas and Morejon, Leonel and Müller, Gero and Reichherzer, Patrick and Schlegel, Leander and Sigl, Günter and van Vliet, Arjen", title = "{CRPropa 3.3: Toward a Unified Multi-Messenger Framework from GeV to ZeV Energies}", doi = "10.22323/1.501.0964", journal = "PoS", year = 2025, volume = "ICRC2025", pages = "964" }