VARMA, B. S.; ARDAGH, F. D.; KRISHNA, S. Pintar-an Attempt to Utilise Pinus Longifolia Tar as a Road Surfacing Material. Indian Forester, [S. l.], v. 57, n. 7, p. 313–325, 1931. DOI: 10.36808/if/1931/v57i7/19999. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/19999. Acesso em: 15 jan. 2026.