@inproceedings{Ghirlanda:20165O,
  author = "Ghirlanda, Giancarlo",
  title = "{Bulk motion and collimation of Gamma Ray Bursts}",
  doi = "10.22323/1.237.0027",
  booktitle = "Proceedings of Frontier Research in Astrophysics {\textemdash} PoS(FRAPWS2014)",
  year = 2016,
  volume = "237",
  pages = "027"
}