@inproceedings{Doria:2009G1,
  author = "Doria, Renato  and  Neves, Mario Junior de Oliveira",
  title = "{An abelian model U(1) x U(1)}",
  doi = "10.22323/1.081.0021",
  booktitle = "Proceedings of 5th International School on Field Theory and Gravitation {\textemdash} PoS(ISFTG)",
  year = 2009,
  volume = "081",
  pages = "021"
}