(1)
de Farias, M. S. Description of the Opening and Closing of Vowel Sounds [e] and [o] in the Pronunciation of Undergraduates from Rio Grande Do Norte and CearĂ¡ at Letras (Spanish) Course. Dom. Ling. 2020, 14 (2), 391-413. https://doi.org/10.14393/DL42-v14n2a2020-3.