ROBINSON, W. H. The Roball: A new seismic isolation device . Bulletin of the New Zealand Society for Earthquake Engineering, [S. l.], v. 35, n. 3, p. 204–207, 2002. DOI: 10.5459/bnzsee.35.3.204-207. Disponível em: https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/445. Acesso em: 26 oct. 2025.