URBANAVIČIUS, V.; MIKUČIONIS, Š.; MARTAVIČIUS, R. Model of the Coupled Transmission Lines with a non-uniform Dielectric. Elektronika ir Elektrotechnika, [S. l.], v. 77, n. 5, p. 23-28, 2007. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10732. Acesso em: 28 sep. 2020.