@article{Oliveira:2007mT,
  author = "Oliveira, Josefa Surek de Souza",
  title = "{Approximate Solution of the Evolution Operator of the Neutrino System }",
  doi = "10.22323/1.031.0057",
  journal = "PoS",
  year = 2007,
  volume = "IC2006",
  pages = "057"
}