@InProceedings{tpcg03-reina,
  author = {Reina, G. and Lange-Last, S. and Engel, K. and Ertl, T.},
  title  = {{Guided Navigation in Task-Oriented 3D Graph Visualizations}},
  year   = {2003},
  pages  = {26 -- 33},
  booktitle = {{Theory and Practice of Computer Graphics '03}}
}