Bruce D'Arcus has just announced the CiteProc project.
This project uses DocBook NG, MODS from the Library of Congress, and formatted with his citation style language (CSL).
Bruce is also working on the OpenOffice bibliographic project, which may incorporate some of this technology.
Check it out at: http://xbiblio.sourceforge.net/citeproc.html. Thanks, Bruce!
See also: DocBook