@Journal{DBLP:journals/tvcg/DwyerKM06,
   title = {Drawing Directed Graphs Using Quadratic Programming},
   author = {Tim Dwyer and Yehuda Koren and Kim Marriott},
   year = 2006,
   Journal = {IEEE Trans. Vis. Comput. Graph.},
   Volume = 12,
   Number = 4,
   Pages = {536-548},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/DBLP-journals-tvcg-DwyerKM06.pdf},
   att_abstract_url = {abstracts/DBLP-journals-tvcg-DwyerKM06.txt}
}