Matteo Gaeta Pierluigi Ritrovato Saverio Salerno ELeGI: The European Learning Grid Infrastructure. 2003 conf/lege/2003-3 LeGE-WG 3 http://ewic.bcs.org/conferences/2003/3rdlege/session1/paper1.htm db/conf/lege/lege32003.html#GaetaRS03