A policy-based management architecture for active and programmable networks. - Christos Tsarouchis; Spyros G. Denazis; Chiho Kitahara; Julio Vivero; Epifanio Salamanca; Edgar Magaña; Alex Galis; Juan Luis Mañas; Yannick Carlinet; Bertrand Mathieu; Odysseas Koufopavloy (IEEE Netw., 2003)