@inproceedings{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",
  booktitle = "Proceedings of Fifth International Conference on Mathematical Methods in Physics  {\textemdash} PoS(IC2006)",
  year = 2007,
  volume = "031",
  pages = "057"
}