TIWARI, K. P. Area Sampling on Aerial Photographs. Indian Forester, [S. l.], v. 100, n. 7, p. 427–435, 1974. DOI: 10.36808/if/1974/v100i7/26877. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/26877. Acesso em: 4 dec. 2025.