@article{Gallo:2011cN,
  author = "Gallo, Luigi",
  title = "{The X-ray weak state of Narrow-Line Seyfert 1 galaxies}",
  doi = "10.22323/1.126.0017",
  journal = "PoS",
  year = 2011,
  volume = "NLS1",
  pages = "017"
}