@inproceedings{Sanchez-Lucas:2017Ly,
  author = "Sanchez-Lucas, Patricia",
  title = "{$<X_{max}>$ measurements and tests of hadronic models using the surface detector of the Pierre Auger Observatory}",
  doi = "10.22323/1.301.0495",
  booktitle = "Proceedings of 35th International Cosmic Ray Conference {\textemdash} PoS(ICRC2017)",
  year = 2017,
  volume = "301",
  pages = "495"
}