Coverage Study for VoIP over Enhanced Uplink. - Fan Rui; Fredrik Persson; Mats Nordberg; Stefan Wänstedt; Miao Qingyu; Gu Xinyu (VTC Spring, 2006)

Evaluation and Analysis of SIP and VOIP Performance with Presence Traffic over HSPA. - Fan Rui; Wang Min; Mårten Ericson; Stefan Wänstedt (PIMRC, 2007)