@article{Manao:2025xB, author = "Manao, Elena and Resconi, Elisa and Padovani, Paolo and Rieger, Frank and Dvali, Gia and Bellenghi, Chiara and Li, Ruohan", title = "{Investigating Non-Accreting Supermassive Black Holes as Sources of Ultra-High-Energy Cosmic Rays}", doi = "10.22323/1.501.0327", journal = "PoS", year = 2025, volume = "ICRC2025", pages = "327" }