BILINSKIS, I.; SUDARS, K. Specifics of Constant Envelope Digital Signals. Elektronika ir Elektrotechnika, [S. l.], v. 84, n. 4, p. 13–16, 2008. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/11097.. Acesso em: 8 feb. 2026.