Hoppe, Christian, and Tadeus Uhl. “A New Parameterized Model for Determining Quality of Online Video Service Using Modern H.265 HEVC and VP9 Codecs”. Journal of Telecommunications and Information Technology, vol. 82, no. 4, Dec. 2020, pp. 72-78, https://doi.org/10.26636/jtit.2020.146220.