@article{Barroso:200761,
  author = "Barroso, A.  and  Ferreira, Pedro  and  Santos, Rui",
  title = "{Tree-Level Vacuum Stability in Multi Higgs Models}",
  doi = "10.22323/1.021.0337",
  journal = "PoS",
  year = 2007,
  volume = "HEP2005",
  pages = "337"
}