@article{Silva:2009mn,
  author = "Silva, Erica de Mello  and  Souza, Wescley Luis",
  title = "{Symmetry approach and the generalized Korteweg-de Vries equation with variable coefficients}",
  doi = "10.22323/1.081.0058",
  journal = "PoS",
  year = 2009,
  volume = "ISFTG",
  pages = "058"
}