@techreport {Zhang-2002-HCO,
	author=		"Song Zhang and David H. Laidlaw",
	institution=	"Brown University Computer Science Department",
	month=		"August",
	number=		"CS-02-18",
	title=		"Hierarchical Clustering of Streamtubes",
	year=		"2002",
	theme=		"medicine and vr and tech",
	project=	"brain",
	added-by=	"Daniel Acevedo",
	date-added=	"Mon February 23 9:16:07 2004"
}
@techreport {Zhang-2002-HCO-url,
	author=		"Song Zhang and David H. Laidlaw",
	institution=	"Brown University Computer Science Department",
	month=		"August",
	note=		" \url{http://vis.cs.brown.edu/results/bibtex/Zhang-2002-HCO.bib}{(bibtex: Zhang-2002-HCO)}",
	number=		"CS-02-18",
	title=		"Hierarchical Clustering of Streamtubes",
	year=		"2002",
	theme=		"medicine and vr and tech",
	project=	"brain",
	added-by=	"Daniel Acevedo",
	date-added=	"Mon February 23 9:16:07 2004"
}