STARAS, S.; KLEIZA, A. Electrodynamical Analysis of the Helical Systems with Axial Symmetry. Elektronika ir Elektrotechnika, [S. l.], v. 13, n. 4, 1997. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/15878.. Acesso em: 22 jan. 2026.