@inproceedings{2004-doitrees-revisited,
 title = {DOITrees Revisited: Scalable, Space-Constrained Visualization of Hierarchical Data},
 author = {Jeffrey Heer AND Stuart K. Card},
 booktitle = {Advanced Visual Interfaces},
 year = {2004},
 pages = {421--424},
 url = {http://idl.cs.washington.edu/papers/doitrees-revisited},
}