@InProceedings{Demuth01,
  author = {Birgit Demuth and Heinrich Hussmann and Lothar Schmitz and Steffen Zschaler},
  title = {Teaching OOT Using a Framework and Both Direct and Net-based Tutoring},
  booktitle = {ED-MEDIA 2001 World Conference on Educational Multimedia, Hypermedia & Telecommunications, Tampere, Finland, June 25-30, 2001},
  year = 2001
}