@inproceedings{Tafel:20091P,
  author = "Tafel, Jacek",
  title = "{Horizons in Robinson-Trautman spacetimes}",
  doi = "10.22323/1.075.0018",
  booktitle = "Proceedings of Black Holes in General Relativity and String Theory {\textemdash} PoS(BHs, GR and Strings)",
  year = 2009,
  volume = "075",
  pages = "018"
}