J. HELAL; M. SOFI; MENDIS, P. Non-Destructive Testing of Concrete: A Review of Methods. Electronic Journal of Structural Engineering, [S. l.], v. 14, n. 1, p. 97–105, 2015. DOI: 10.56748/ejse.141931. Disponível em: https://ejsei.com/EJSE/article/view/193. Acesso em: 19 jul. 2024.