@inproceedings{kettner2004spherical,
  author =       "Kutter, Oliver and Kettner, Stefanie and Braun, Eva U. and Navab, Nassir and Lange, Rüdiger and Bauernschmitt, Robert",
  title =        "Towards an Integrated Planning and Navigation System for Aortic Stent-Graft Placement",
  booktitle =    "Proc. of Computer Assisted Radiology and Surgery (CARS)",
  series      = {},
  editor      = {},
  publisher   = {},
  volume      = {},
  year        = {2007},
  month       = jun,
  isbn        = {},
  pages       = {},
  language    = {american},
  doi         = {},
  url         = {},
}