@article{OrusLatorreEisertetal.2006,
  author    = {Roman Orus and Jose Ignacio Latorre and Jens Eisert and Marcus Cramer},
  title     = {Half the entanglement in critical systems is distillable from a single specimen},
  doi       = {10.1103/Physreva.73.060303},
  url       = {http://pra.aps.org/},
  year      = {2006},
}