Panagiev, O. B. 2009. “Theoretical Analysis of the Impact of CSO and CTB Distortions on BER Performances in Analog M-QAM HFC CATV Transmission Systems”. Elektronika Ir Elektrotechnika 96 (8): 59-61. https://eejournal.ktu.lt/index.php/elt/article/view/9957.