Huan Pham Bill Lavery On Performance Objective Functions for Optimising Routed Networks for Best QoS. 64-75 2003 conf/qosip/2003 QoS-IP http://link.springer.de/link/service/series/0558/bibs/2601/26010064.htm db/conf/qosip/qosip2003.html#PhamL03