BALBONAS, D.; DAUNYS, G. Classification of Phonemes using Sound and Visual Information. Elektronika ir Elektrotechnika, [S. l.], v. 61, n. 5, p. 68–70, 2005. DOI: 10.5755/j02.eie.10432. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10432.. Acesso em: 3 may. 2026.