Kovacikova, Tatiana, Pavol Segec, and Michal Bruncko. “Standardization Paths for NGN IMS-Based Architecture”. Communications - Scientific letters of the University of Zilina 10, no. 4 (December 31, 2008): 15-18. Accessed April 6, 2026. http://journals.uniza.sk/index.php/communications/article/view/1098.