@article{Bougouffa:2013,
  author  = "S. Bougouffa and Z. Ficek",
  title   = "Effect of retardation in the atom-field interaction on entanglement in a double Jaynes-Cummings system",
  journal = "Journal of Physics B : Atomic Molecular and Optical Physics",
  volume  = "Vol. 46",
  number  = "no. 22",
  pages   = "1--7",
  year    = "2013",
}