@inproceedings{Prouza:2010Jn,
  author = "Prouza, Michael",
  title = "{Studies of the ultra-high energy cosmic ray composition at the Pierre Auger Observatory}",
  doi = "10.22323/1.084.0106",
  booktitle = "Proceedings of European Physical Society Europhysics Conference on High Energy Physics {\textemdash} PoS(EPS-HEP 2009)",
  year = 2010,
  volume = "084",
  pages = "106"
}