@article{Delsanto:2009Gf,
  author = "Delsanto, Melania",
  title = "{Spectral state transitions in GX 339-4}",
  doi = "10.22323/1.062.0091",
  journal = "PoS",
  year = 2009,
  volume = "MQW7",
  pages = "091"
}