CRAIOVEANU, R. Using two-dimensional box plots to visualize the vowel space: A study of rounded vowel allophones in Tigrinya. Canadian Acoustics, [S. l.], v. 39, n. 3, p. 156–157, 2011. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2458. Acesso em: 23 apr. 2024.