DHRITIKESH CHAKRABARTY. Unbiased Estimator of Population Harmonic Mean. Partners Universal International Research Journal, [S. l.], v. 4, n. 4, p. 88–93, 2025. DOI: 10.5281/zenodo.18140993. Disponível em: https://puirj.com/index.php/research/article/view/236. Acesso em: 21 apr. 2026.