@inproceedings{DBLP:conf/gd/GansnerN98,
	author={Emden R. Gansner, 
               Stephen C. North},
	booktitle={Graph Drawing},
	crossref={DBLP:conf/gd/1998},
	pages={364-373},
	title={Improved Force-Directed Layouts},
	year=1998,
}