HOWARD, S. H. The Calculation of an Approximate Financial Ratation. Indian Forester, [S. l.], v. 42, n. 2, p. 72–85, 1916. DOI: 10.36808/if/1916/v42i2/17974. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/17974. Acesso em: 4 dec. 2025.