@inproceedings{BerwangerDawHunKre06,
  author = "Dietmar Berwanger and Anuj Dawar and Paul Hunter and Stephan Kreutzer",
  booktitle = "Symposium on Theoretical Aspects of Computer Science (STACS)",
  title = "DAG-Width and Parity Games",
  url = "http://web.comlab.ox.ac.uk/oucl/work/paul.hunter/papers/dagwidth_stacs06.pdf",
  year = "2006",
}