Roberto Baldoni Stefano Fuligni Massimo Mecella Francesco Tortorelli The Italian e-Government Enterprise Architecture: A Comprehensive Introduction with Focus on the SLA Issue. 1-12 2008 ISAS http://dx.doi.org/10.1007/978-3-540-68129-8_1 conf/isas/2008 db/conf/isas/isas2008.html#BaldoniFMT08