@Article{SCI:Fle2009a,
  author =    "P.T. Fletcher PT and S. Venkatasubramanian and S.
              Joshi",
  title =     "The geometric median on Riemannian manifolds with
              application to robust atlas estimation",
  journal =   "Neuroimage",
  volume =    "45",
  number =    "1",
  pages =     "S143--S152",
  year =      "2009",
  month =     "March",
  pmid =      "19056498",
  url =       "http://www.sci.utah.edu/publications/fletcher09/Fletcher_NeuroImage2009.pdf",
}