@InProceedings{Cao Long:2003,
  author  = "V. Cao Long and P. Goldstein and M. Trippenbach and N. Hoang Van",
  title       = "On existence of solitons for the 3rd harmonic of a light beam in optical fibres",
  booktitle   = "28th National Conference on Theoretical Physics",
  address     = "Sam Son, Wietnam",
  publisher   = "Hanoi, [brak wydawcy]",
  pages       = "212--217",
  organization = "Vietnam Physical Society",
  year        = "2003",
}