SHEPHERD, R. Earthquake engineering research at
 the University of Canterbury. Bulletin of the New Zealand Society for Earthquake Engineering, [S. l.], v. 2, n. 2, p. 186–192, 1969. DOI: 10.5459/bnzsee.2.2.186-192. Disponível em: https://bulletin.nzsee.org.nz/article/view/1404. Acesso em: 1 may. 2026.