PAPAGEORGIOU, Christos D. Helical and Spiral Antennas as Electric Small Antennas. European Journal of Applied Sciences, [S. l.], v. 10, n. 6, p. 587–605, 2023. DOI: 10.14738/aivp.106.13699. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/8297. Acesso em: 30 may. 2026.