GILLIES, A. G.; SHEPHERD, R. Prediction of post-elastic seismic response of structures by a mode superpostion technique
. Bulletin of the New Zealand Society for Earthquake Engineering, [S. l.], v. 16, n. 3, p. 222–233, 1983. DOI: 10.5459/bnzsee.16.3.222-233. Disponível em: https://www.bulletin.nzsee.org.nz/index.php/bnzsee/article/view/922. Acesso em: 11 oct. 2025.