REHMAN, Dr.Fazal; LIMBU, Dhan Bir. A Novel Sixth-Root–Factorial Series Approximation for π Derived from (31)^(1/6). ACADEMIA International Journal for Social Sciences, [S. l.], v. 4, n. 4, p. 4431–4434, 2025. DOI: 10.63056/ACAD.004.04.1280. Disponível em: https://academia.edu.pk/index.php/Journals/article/view/1280. Acesso em: 5 mar. 2026.