@article{HagemannBackhausGoessner2005,
  author    = {Hans-J{\"u}rgen Hagemann and U. Backhaus and S. Goessner},
  title     = {Collaborative eLearning Concepts for University Level Online Laboratory Courses in Engineering. U. Backhaus, S. Goessner, H. J. Hagemann},
  journal   = {Proceedings Online Educa Berlin: 8th International Conference on Technology Supported Learning \& Training. 2002},
  pages     = {62 -- 66},
  year      = {2005},
}