ВАЛИПУР, А.; ДЖАМАЛЗАД, М. Analysis Acoustical Formants Russian Fricative Consonants in Comparison with the Pronunciation of Iranian Students. Issledovatel’skiy Zhurnal Russkogo Yazyka I Literatury, [S. l.], v. 9, n. 2, p. 11–25, 2021. DOI: 10.52547/iarll.18.11. Disponível em: https://journaliarll.ir/index.php/iarll/article/view/199. Acesso em: 29 mar. 2024.