@InProceedings{DBLP:conf/gd/North95,
   title = {Incremental Layout in DynaDAG},
   author = {Stephen C. North},
   year = 1995,
   BookTitle = {Graph Drawing},
   att_url = {http://www2.research.att.com/areas/visualization/papers_videos/pdf/DBLP-conf-gd-North95.pdf}
}