@article{Ohm:20115J,
  author = "Ohm, Stefan  and  Fernandes, Milton Virgilio",
  title = "{H.E.S.S. observations of the massive stellar cluster Westerlund 1}",
  doi = "10.22323/1.123.0257",
  journal = "PoS",
  year = 2011,
  volume = "Texas 2010",
  pages = "257"
}