RAY, P. N. Estimation of Tree Volume Models Using Weighted Covariance Analysis with Dummy Variables. Indian Forester, [S. l.], v. 121, n. 8, p. 686–701, 1995. DOI: 10.36808/if/1995/v121i8/7200. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/7200. Acesso em: 21 aug. 2025.