@InCollection{SCI:Fle2006a,
  author =    "P.T. Fletcher and S.M. Pizer and S. Joshi",
  title =     "Shape Variation of Medial Axis Representations via
              Principal Geodesic Analysis on Symmetric Spaces",
  booktitle = "Statistics and Analysis of Shapes",
  pages =     "29--59",
  year =      "2006",
  publisher = "Springer",
  doi =       "10.1007/0-8176-4481-4_2",
}