@Article{cpc10-muelleta,
  author = {Müller, T. and Grave, F.},
  title  = {{GeodesicViewer - A tool for exploring geodesics in the theory of relativity}},
  year   = {2010},
  pages  = {413-419},
  journal = {{Computer Physics Communications}},
  volume = {{181}},
  doi = {{10.1016/j.cpc.2009.10.010}}
}