@Journal{DBLP:journals/tvcg/DwyerKM06a,
   title = {IPSep-CoLa: An Incremental Procedure for Separation Constraint Layout of Graphs},
   author = {Tim Dwyer and Yehuda Koren and Kim Marriott},
   year = 2006,
   Journal = {IEEE Trans. Vis. Comput. Graph.},
   Volume = 12,
   Number = 5,
   Pages = {821-828},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/DBLP-journals-tvcg-DwyerKM06a.pdf},
   att_abstract_url = {abstracts/DBLP-journals-tvcg-DwyerKM06a.txt}
}