@Article{SCI:Fle2004a,
  author =    "P.T. Fletcher and C. Lu and S.M. Pizer and S.
              Joshi",
  title =     "Principal Geodesic Analysis for the Study of
              Nonlinear Statistics of Shape",
  journal =   "IEEE Trans Med Imaging",
  volume =    "23",
  number =    "8",
  pages =     "995--1005",
  year =      "2004",
  month =     "August",
  url =       "http://www.sci.utah.edu/publications/fletcher04/TMI04_Fletcher_PGA.pdf",
}