KOTON, J.; HERENCSAR, N.; HORNG, J.-W. Differential Second-Order Voltage-Mode All-Pass Filter Using Current Conveyors. Elektronika ir Elektrotechnika, [S. l.], v. 22, n. 5, p. 52 - 57, 2016. DOI: 10.5755/j01.eie.22.5.16344. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/16344. Acesso em: 29 sep. 2022.