@inproceedings{Cecil:2023vV, author = "Cecil, Rahul and Barbosa, Victor Martins and Lypova, Iryna and Meyer, Manuel and Wagner, Stefan", title = "{Probing Gamma-Ray Propagation at Very-High Energies with H.E.S.S. Observations of M87}", doi = "10.22323/1.444.0908", booktitle = "Proceedings of 38th International Cosmic Ray Conference {\textemdash} PoS(ICRC2023)", year = 2023, volume = "444", pages = "908" }