@Journal{DBLP:journals/tvcg/CarmelHK04,
   title = {Combining Hierarchy and Energy Drawing Directed Graphs},
   author = {Liran Carmel and David Harel and Yehuda Koren},
   year = 2004,
   Journal = {IEEE Trans. Vis. Comput. Graph.},
   Volume = 10,
   Number = 1,
   Pages = {46-57},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/DBLP-journals-tvcg-CarmelHK04.pdf},
   att_abstract_url = {abstracts/DBLP-journals-tvcg-CarmelHK04.txt}
}