ODF-relaterte referanser
[http://www.robweir.com/blog/2009/03/odf-spreadsheet-interoperability-theory.html ODF Spreadsheet Interoperability: Theory and Practice]
[http://www.oasis-open.org/apps/group_public/document.php?document_id=32350 OpenDocument Formula Specification 2009-05-01]
[http://wiki.nuug.no/aktiviteter/2009odfseminar ODF-seminar?]