Fricke, Matthias, Andrea Heckwolf, Ralf Herber, Ralf Nitsch, and Stefan Wevering. “Requirements of 4G-Based Mobile Broadband on Future Transport Networks”. Journal of Telecommunications and Information Technology 48, no. 2 (June 30, 2012): 21–28. Accessed August 27, 2026. https://www.jtit.pl/jtit/article/view/1261.