• Jose Oscar Fajardo, Fidel Liberal, Nagore Bilbao  Impact of the video slice size on the visual quality for H.264 over 3G UMTS services 6th International Conference on Broadband Communications, Networks, and System (BROADNETS 2009). Madrid, Spain. September 14-17,  2009
• Jose Oscar Fajardo, Fidel Liberal, Nagore Bilbao  Study of the impact of UMTS Best Effort parameters on QoE of VoIP services 5th International Conference on Autonomic and Autonomous Systems (ICAS 2009). Valencia, Spain. April 20-25,  2009
• Nagore Bilbao, Jose Oscar Fajardo, Fidel Liberal  PQoS-driven VoIP Service Adaptation in UMTS Networks 2nd International Workshop on the Evaluation of Quality of Service through Simulation in the Future Internet (QoSIM 2009). Rome, Italy. March 6-8,  2009