@inproceedings{Schmidt:2021Bi, author = "Schmidt, David", title = "{Probing hadronic interactions with measurements at ultra-high energies with the Pierre Auger Observatory}", doi = "10.22323/1.390.0609", booktitle = "Proceedings of 40th International Conference on High Energy physics {\textemdash} PoS(ICHEP2020)", year = 2021, volume = "390", pages = "609" }