@article{Grinstein:2001kx,
  author = "Grinstein, Benjamin  and  Nolte, Detlef R.",
  title = "{Bulk observers in non-factorizable geometries  }",
  doi = "10.22323/1.007.0162",
  journal = "PoS",
  year = 2001,
  volume = "hep2001",
  pages = "162"
}