@InProceedings{osgws02-weiler,
  author = {Manfred Weiler and Thomas Ertl},
  title  = {{Ein Volume-Rendering-Framework für OpenSG}},
  year   = {2002},
  booktitle = {{Proceedings of OpenSG Symposium 2002}},
  url = {{http://www.opensg.org/OpenSGPLUS/symposium/Papers2002/index.EN.html}}
}