Tommy Ellqvist David Koop Juliana Freire Cláudio T. Silva Lena Strömbäck Using Mediation to Achieve Provenance Interoperability. 291-298 2009 SERVICES I http://doi.ieeecomputersociety.org/10.1109/SERVICES-I.2009.68 conf/services/2009-1 db/conf/services/services2009-1.html#EllqvistKFSS09