@article{JGAA_2009_13_3_a2,
     author = {Vassilis Tsiaras and Sofia Triantafilou and Ioannis Tollis},
     title = {DAGmaps: {Space} {Filling} {Visualization} of {Directed} {Acyclic} {Graphs}},
     journal = {Journal of graph algorithms and applications},
     pages = {319--347},
     year = {2009},
     volume = {13},
     number = {3},
     doi = {10.7155/jgaa.00190},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00190/}
}