@article{Grupe:20111N,
  author = "Grupe, Dirk",
  title = "{WPVS 007 and Mkn 335: the link between NLS1s and BAL QSOs}",
  doi = "10.22323/1.126.0053",
  journal = "PoS",
  year = 2011,
  volume = "NLS1",
  pages = "053"
}