99.99℅ Approximation to Angle Trisection. Global Journal of Science Frontier Research, [S. l.], v. 23, n. F5, p. 29–37, 2023. Disponível em: https://testing.journalofscience.org/index.php/GJSFR/article/view/102722. Acesso em: 4 feb. 2026.