@article{DBLP:journals/spe/GansnerN00,
	author={Emden R. Gansner, 
               Stephen C. North},
	journal={Softw., Pract. Exper.},
	number=11,
	pages={1203-1233},
	title={An open graph visualization system and its applications to software engineering},
	volume=30,
	year=2000,
}