GRAŽULEVIČIUS, A.; GRAŽULEVIČIUS, G. Investigation of Possibilities of Sound Recognition. Elektronika ir Elektrotechnika, [S. l.], v. 64, n. 8, p. 47–50, 2005. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10515.. Acesso em: 8 feb. 2026.