@inproceedings{KMS05a,
 author = {Keim, Daniel A. and Mansmann, Florian and Schreck, Tobias},
 booktitle = {LNI Tagungsbaende Informatik 2005, Spt. 19-22, Bonn, Germany},
 title = {Analyzing Electronic Mail using Temporal, Spatial, and Content-based Visualization Techniques},
 year = {2005}
}