@article{Rieger:2009D0,
  author = "Rieger, Frank M.",
  title = "{Possible variability signatures of Supermassive Binary Black Holes in Blazars}",
  doi = "10.22323/1.063.0058",
  journal = "PoS",
  year = 2009,
  volume = "BLAZARS2008",
  pages = "058"
}