@article{Sun:2012,
  author  = "L. Sun and G. Li and Z. Ficek",
  title   = "First-order coherence versus entanglement in a nanomechanical cavity",
  journal = "Physical Review A",
  volume  = "Vol. 85",
  number  = "no. 2",
  pages   = "1--14",
  year    = "2012",
}