@InProceedings{GWF05,
  author =       {Martin Gutbrod and Christian Werner and Stefan Fischer},
  title =        {Time-based content marks for fine-grained navigation in educational content},
  booktitle =    {Proceedings of the IADIS International Conference e-Society},
  address =      {Malta},
  year =         {2005},
  month =        jun,
  pages="3-10",
  ibrgroups = "vs",
  ibrauthors = "gutbrod cwerner fischer",
}