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Hi Simon, Thanks for your reply. I have used xmpincl and recently stumbled upon pdfx [1] for producing PDF/A compliant files (which require some XMP). I started work on extending pdfx's functionality to support some more URIs and embedded reference lists [2], but reading through some of the XMP and PDF/A specifications I got a bit put off by the limitations imposed on the RDF that can be included as XMP in PDF/A and started wondering if it's actually possible. I wanted to say I had found the Citation Typing Ontology, but then saw it is part of SPAR. Ben [1] http://www.ctan.org/tex-archive/macros/latex/contrib/pdfx/ [2] https://github.com/bencomp/pdfx-ext On 12/6/'12 12:15 AM, Simon Spero wrote: > You can include XMP packets in pdftex files using the \pdfcatalog > primitive ; there are a couple of macro packages that add a little bit of a > wrapper: > > xmpincl basically just wraps and inserts the contents of an external > RDF+XML file as the value of /Metadata . > http://www.ctan.org/tex-archive/macros/latex/contrib/xmpincl/ > > There is no standard ontology for citation data; you might look at > BIBO http://purl.org/ontology/bibo/ or > SPAR - http://purl.org/spar/ > > Simon > On Mon, Jun 11, 2012 at 5:07 AM, Ben Companjen<[log in to unmask]> wrote: > >> Hi all, >> >> I have been wondering whether it is possible to put a bibliography (list >> of references in a journal article, for example) in an XMP packet in a PDF >> document. Having read about efforts to get the references from a document >> by parsing text, I thought it might make sense (and be possible) to put a >> machine-readable version in the document. >> >> I haven't found anyone who had done this (yet), so I started wondering >> why. Is it too obvious to write about? Or is it impossible? >> >> Eventually I'd like to have it automatically created at the same time >> BibTeX creates the 'normal' bibliography for my pdfLaTeX document. And if >> the PDF/A standard allows it, have it in such a way that it complies to the >> long-term archival PDF standard. It appears, however, that PDF/A-1 allows >> the XMP description of the document itself to have only one author [1], >> which makes me doubt the use of PDF/A in general. >> If I manage to get it working, could it be a topic of interest for the >> Code4Lib Journal? >> >> Regards, >> >> Ben >> >> [1] www.pdfa.org/wp-content/**uploads/2011/08/tn0003_** >> metadata_in_pdfa-1_2008-03-**182.pdf<http://www.pdfa.org/wp-content/uploads/2011/08/tn0003_metadata_in_pdfa-1_2008-03-182.pdf> >>