@article{Caccianiga:2011zm,
  author = "Caccianiga, Alessandro  and  Severgnini, Paola  and  Della Ceca, Roberto  and  Corral, Amalia  and  Fanali, Rossella  and  Marchese, Elena",
  title = "{X-ray selected Narrow-Line Seyfert 1 Galaxies}",
  doi = "10.22323/1.126.0066",
  journal = "PoS",
  year = 2011,
  volume = "NLS1",
  pages = "066"
}