LORD, J.; ZAYED, M. Three dimensional elastic dynamic analysis of a 985 foot high freestanding communications tower. Bulletin of the New Zealand Society for Earthquake Engineering, [S. l.], v. 8, n. 3, p. 222–237, 1975. DOI: 10.5459/bnzsee.8.3.222-237. Disponível em: https://bulletin.nzsee.org.nz/article/view/1208. Acesso em: 7 may. 2026.