"GAO-01-178R.", "January 2001.", and Title from title screen.
Includes bibliographical references.
Mode of access: Internet via the GPO Access web site. Address as of 5/9/01: http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=gao&docid=f:d01178r.pdf; current access is available via PURL. and System requirements: Adobe Acrobat Reader.