@article{Duenkel:2021bn, author = "Duenkel, Fabian and Niechciol, Marcus and Risse, Markus", title = "{Photon decay in UHE air showers: a stringent bound on Lorentz violation}", doi = "10.22323/1.395.0293", journal = "PoS", year = 2021, volume = "ICRC2021", pages = "293" }