http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Ticket to Work and Work Incentives Improvement Act of 1999
Also available via Internet at the SSA web site. Address as of 8/08/01: http://www.ssa.gov/pubs/10060.html; current access is available via PURL.