PORTER, H. L. Notes on Forest Tram Lines and Wire Tramway in Germany and Switzerland. Indian Forester, [S. l.], v. 20, n. 5, p. 180–184, DOI: 10.36808/if/1894/v20i5/15155. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/15155. Acesso em: 21 feb. 2026.