Joel Sommers Paul Barford Nick G. Duffield Amos Ron A Framework for Multi-Objective SLA Compliance Monitoring. 2446-2450 2007 conf/infocom/2007 INFOCOM http://dx.doi.org/10.1109/INFCOM.2007.298 db/conf/infocom/infocom2007.html#SommersBDR07