@inproceedings{Unger:2016GO,
  author = "Unger, Michael",
  title = "{Report of the Working Group on the Composition of Ultra-High Energy Cosmic Rays }",
  doi = "10.22323/1.236.0307",
  booktitle = "Proceedings of The 34th International Cosmic Ray Conference {\textemdash} PoS(ICRC2015)",
  year = 2016,
  volume = "236",
  pages = "307"
}