@Article{BarVis82,
  author =       "R. Bar-Yehuda and U. Vishkin",
  title =        "Complexity of Finding k-Path-Free Dominating Sets in
                 Graphs",
  journal =      "Information Processing Letters",
  volume =       "14",
  number =       "5",
  pages =        "228--232",
  year =         "1982",
}