@inproceedings{Matthews:2023FT, author = "Matthews, James and Taylor, Andrew", title = "{How, where and when do cosmic rays reach ultrahigh energies?}", doi = "10.22323/1.423.0010", booktitle = "Proceedings of 27th European Cosmic Ray Symposium {\textemdash} PoS(ECRS)", year = 2023, volume = "423", pages = "010" }