AHMED ANWAR AL NAAMA, M. Extracting the features of English letters pronounciation using the fractal dimension. Journal of Education and Science (JES), [S. l.], v. 25, n. 3, p. 149–162, 2012. DOI: 10.33899/edusj.2012.59212. Disponível em: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23984. Acesso em: 6 aug. 2025.