Building Groupwares over Duplicated Object Systems. - Hechmi Khlifi; Jocelyn Desbiens; Mohamed Cheriet (CRIWG, 2002)

Estimation and Removal of Clock Skew From Delay Measures. - Hechmi Khlifi; Jean-Charles Grégoire (LCN, 2004)

Design and Performance of a Stand-Alone Media Server. - Hechmi Khlifi; Jean-Charles Grégoire (Systems Communications, 2005)

VoIP and NAT/firewalls: issues, traversal techniques, and a real-world solution. - Hechmi Khlifi; Jean-Charles Grégoire; James Phillips (IEEE Commun. Mag., 2006)

Low-complexity offline and online clock skew estimation and removal. - Hechmi Khlifi; Jean-Charles Grégoire (Comput. Networks, 2006)

A Modular Architecture for Providing Carrier-Grade SIP Telephony Services. - Hechmi Khlifi; Jean-Charles Grégoire (WiMob, 2007)

IMS for Enterprises. - Hechmi Khlifi; Jean-Charles Grégoire (IEEE Commun. Mag., 2007)

ARTP: A buffer-aware rate control protocol for media streaming. - Hechmi Khlifi; Jean-Charles Grégoire (Comput. Networks, 2007)

IMS Application Servers: Roles, Requirements, and Implementation Technologies. - Hechmi Khlifi; Jean-Charles Grégoire (IEEE Internet Comput., 2008)