SULTONOVA, Fozilakhon. Theoretical Phonetics: Vowel System. Principles of Classification. Conference Proceedings: Fostering Your Research Spirit, [S. l.], p. 212–215, 2024. DOI: 10.2024/tk2g3s72. Disponível em: https://jainkwellpublishing.com/index.php/conferences/article/view/1049.. Acesso em: 10 feb. 2026.