Daniel A. Keim Florian Mansmann Christian Panse Jörn Schneidewind Mike Sips Mail Explorer - Spatial and Temporal Exploration of Electronic Mail. 247-254 2005 conf/vissym/2005 EuroVis http://dx.doi.org/10.2312/VisSym/EuroVis05/247-254 db/conf/vissym/eurovis2005.html#KeimMPSS05