@InProceedings{rbf-routing,
  author =	 {Ravi Kumar and David Liben-Nowell and Andrew
                  Tomkins},
  title =	 {Navigating Low-Dimensional and Hierarchical
                  Population Networks},
  booktitle =	 {Proceedings of the 14th Annual European Symposium on
                  Algorithms (ESA'06)},
  pages =	 {480--491},
  year =	 2006,
  month =	 sep
}