Jerabek, Jan, Roman Sotner, Josef Polak, Kamil Vrba, and Tomas Dostal. “Reconnection-Less Electronically Reconfigurable Filter With Adjustable Gain Using Voltage Differencing Current Conveyor”. Elektronika ir Elektrotechnika 22, no. 6 (December 8, 2016): 39 - 45. Accessed February 24, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/17221.