SEKHAR, A. C.; RAJPUT, S. S.; GUPTA, V. K. Some Preliminary Observations in Non-Destructive Testing of Timber. Indian Forester, [S. l.], v. 95, n. 9, p. 653–657, 1969. DOI: 10.36808/if/1969/v95i9/26159. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/26159. Acesso em: 4 dec. 2025.