ŠTARAS, S.; KATKEVIČIUS, A. Properties of Helical Structures Containing Periodical Inhomogeneities. Elektronika ir Elektrotechnika, [S. l.], v. 99, n. 3, p. 49–52, 2010. DOI: 10.5755/j02.eie.9904. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/9904.. Acesso em: 24 may. 2026.