ARMSTRONG, I. C. Full-strength butt welds of reinforcing bars by the pressure - gas process. Bulletin of the New Zealand Society for Earthquake Engineering, [S. l.], v. 4, n. 2, p. 270–284, 1971. DOI: 10.5459/bnzsee.4.2.270-284. Disponível em: https://bulletin.nzsee.org.nz/article/view/1303. Acesso em: 11 may. 2026.