@article{Ngyuen Viet:2007,
  author  = "H. Ngyuen Viet and V. Cao Long and M. Trippenbach",
  title   = "Stability of two-dimensional dispersion managed light bullets in a kerr medium",
  journal = "Communications in Physics",
  volume  = "Vol. 17",
  number  = "suppl.",
  pages   = "51--58",
  year    = "2007",
}