All links here are in totally random order.
The BibTeXML Project
The RefDB Project
« BiblioML » Project
UNIMARC format description
Overview of
various bibliographic formats, tools, and the home
of the perl bp project (Dana Jacobs)
BibDB
program
Bibliography
Tools (Chris Putnam)
MODS (Metadata Object
Description Schema), from the library of congress
DOI (Digital Object Identifier)
Pybliographer
Jurabib package