Diogo Reis Nuno Freire Hugo Manguinhas Gilberto Pedrosa REPOX - A Framework for Metadata Interchange. 479-480 2009 ECDL http://dx.doi.org/10.1007/978-3-642-04346-8_65 conf/ercimdl/2009 db/conf/ercimdl/ecdl2009.html#ReisFMP09