@inproceedings{Mohrmann:2023Fn, author = "Mohrmann, Lars", title = "{Young massive stellar clusters as cosmic-ray sources: the case of Westerlund 1}", doi = "10.22323/1.423.0106", booktitle = "Proceedings of 27th European Cosmic Ray Symposium {\textemdash} PoS(ECRS)", year = 2023, volume = "423", pages = "106" }