@unpublished{DGK02,
  author =       "Dinur, Irit and Guruswami, Venkatesan and Khot, Subhash",
  title =        "Vertex Cover on k-Uniform Hypergraphs is Hard to
                 Approximate within Factor (k-3-epsilon)",
  note = "{ECCC} Technical Report TR02-027",
  year =         "2002",
}