http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"A preliminar version appears in the 13th Intl. Conf. on Distr. Comp. Systems, May 1993, Pittsburgh."
"This report supercedes report #92-020."
Technical report (Texas A & M University. Computer Science Department) ; 93-015