Managing Virtualization of Networks and Services 18th IFIP/IEEE International Workshop on Distributed Systems: Operations and Management, DSOM 2007, San José, CA, USA, October 29-31, 2007. Proceedings - Clemm, Alexander; Granville, Lisandro Zambenedetti; Stadler, Rolf (Springer Berlin Heidelberg : Imprint: Springer, 2007)