@article{article,
  author    = {Dobrev, Stefan and Nicola, Santoro and Shi, Wei},
  title     = {Locating a Black Hole in an Un-oriented Ring Using Tokens: The Case of Scattered Agents},
  journal = {Euro-Par 2007: Euro-Par 2007 Parallel Processing},
  pages = {608--617},
  year  = {2007},
  DOI = {10.1007/978-3-540-74466-5_64}
}