@article{MV06a,
 author = {Mansmann, Florian and Vinnik, Svetlana},
 journal = {IEEE Transactions on Visualization and Computer Graphics (TVCG)},
 month = {Nov},
 number = {6},
 title = {Interactive Exploration of Data Traffic with Hierarchical Network Maps},
 volume = {12},
 year = {2006}
}