@inproceedings{Gonzalez-Galan:2011q6,
  author = "Gonzalez-Galan, Ana  and  Kuulkers, Erik  and  Kretschmar, Peter  and  Larsson, Stefan  and  Postnov, Konstantin  and  Kochetkova, Al. Yu.  and  Finger, Mark H.",
  title = "{Spin period evolution of GX 1+4}",
  doi = "10.22323/1.115.0016",
  booktitle = "Proceedings of 8th INTEGRAL Workshop “The Restless Gamma-ray Universe” {\textemdash} PoS(INTEGRAL 2010)",
  year = 2011,
  volume = "115",
  pages = "016"
}