@InProceedings{vast08-giereth-poster,
  author = {Giereth, M. and Bosch, H. and Ertl, T.},
  title  = {{A 3D Treemap Approach for Analyzing the Classificatory Distribution in Patent Portfolios (Poster)}},
  year   = {2008},
  pages  = {189-190},
  booktitle = {{IEEE Symposium on Visual Analytics Science and Technology (VAST'08)}}
}