NICKELSON, L.; GRIC, T.; ASMONTAS, S.; MARTAVICIUS, R. Electrodynamical Analyses of Dielectric and Metamaterial Hollow-core CylindricalWaveguides. Elektronika ir Elektrotechnika, [S. l.], v. 82, n. 2, p. 3–8, 2008. DOI: 10.5755/j02.eie.11043. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/11043.. Acesso em: 11 jun. 2026.