Some Fading-related Problems at Shortwave Propagation Path in the Baltics. Elektronika ir Elektrotechnika, [S. l.], v. 85, n. 5, p. 57–60, 2008. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/11162.. Acesso em: 5 dec. 2025.