LAWRENCE, Sophie; NOLAN, Francis; MCDOUGALL, Kirsty. Acoustic and perceptual effects of telephone transmission on vowel quality. International Journal of Speech, Language and the Law, [S. l.], v. 15, n. 2, p. 161–192, 2009. DOI: 10.1558/ijsll.v15i2.161. Disponível em: https://journal.equinoxpub.com/IJSLL/article/view/6137. Acesso em: 16 apr. 2025.