Batalla, Jordi Mongay, Jarosław Śliwiński, Halina Tarasiuk, and Wojciech Burakowski. “Impact of Signaling System Performance on QoE in Next Generation Networks”. Journal of Telecommunications and Information Technology 42, no. 4 (December 30, 2010): 117–130. Accessed October 24, 2025. https://www.jtit.pl/jtit/article/view/1121.