@article{Bellido:2017Li, author = "Bellido, Jose", title = "{Depth of maximum of air-shower profiles at the Pierre Auger Observatory: Measurements above $10^{17.2}$ eV and Composition Implications}", doi = "10.22323/1.301.0506", journal = "PoS", year = 2017, volume = "ICRC2017", pages = "506" }