@article{Cao Long:2008,
  author  = "V. Cao Long and K. Dinh Xuan and D. BUI and H. Ngyuen Viet",
  title   = "Eit in multi-level cascade scheme of cold rubidium atoms: theoretical considerations",
  journal = "Communications in Physics",
  volume  = "Vol. 18",
  number  = "no 3",
  pages   = "146--150",
  year    = "2008",
}