BOUALI, M. Sharp inequalities for sine and cosine on complex circles and applications. International Journal of Open Problems in Computer Science and Mathematics, [S. l.], v. 19, n. 3, p. 37–51, 2026. Disponível em: https://ijopcm.icsrs.uk/index.php/journal/article/view/68. Acesso em: 14 jul. 2026.