@ARTICLE{BeCaHa14,
  author = {Berkels, Benjamin and Cabrilo, Ivan and Haller, Sven and Rumpf, Martin
	and Schaller, Karl},
  title = {Co-Registration of Intra-Operative Brain Surface Photographs and
	Pre-Operative {MR} Images},
  journal = {International Journal of Computer Assisted Radiology and Surgery},
  year = {2014},
  volume = {9},
  pages = {387--400},
  number = {3},
  month = may,
  doi = {10.1007/s11548-014-0979-y},
  pdf = {http://numod.ins.uni-bonn.de/research/papers/public/BeCaHa14.pdf},
}