Leonidas Lymberopoulos Emil Lupu Morris Sloman PONDER policy implementation and validation in a CIM and differentiated services framework. 31-44 2004 NOMS (1) http://dx.doi.org/10.1109/NOMS.2004.1317639 conf/noms/2004 db/conf/noms/noms2004.html#LymberopoulosLS04