@inproceedings{Tarana:2009G4,
  author = "Tarana, Antonella",
  title = "{INTEGRAL long term monitoring of 4U 1722-30: evidence for spectral state variations}",
  doi = "10.22323/1.067.0046",
  booktitle = "Proceedings of 7th INTEGRAL Workshop  {\textemdash} PoS(Integral08)",
  year = 2009,
  volume = "067",
  pages = "046"
}