@article{ Eclipses,
  url = {eclipses.pdf}
}
,
  journal = {The Visual Computer}
}
,
  title = {Visualization of Eclipses and Planetary Conjunction Events: The Interplay between Model Coherence, Scaling and Animation}
}
,
  year = {2001}
}
,
  author = {Walter Oberschelp and Alexander Hornung and Horst Samulowitz}
}