Puidokas, V., and A. J. Marcinkevicius. “Filter for Intermodulation Distortion Measurement of Audio Power Amplifiers”. Elektronika ir Elektrotechnika 114, no. 8 (October 21, 2011): 47-50. Accessed April 20, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/695.