ARYAL, M. P. Quality evaluation of concrete structures: Some nondestructive testing approaches. Nepalese Journal of Engineering, [S. l.], v. 1, n. 1, p. 80–83, 2005. Disponível em: https://www.nepjol.info/index.php/NJOE/article/view/30. Acesso em: 28 mar. 2024.