KELLY; HAAVIK. Simplified method for measuring consistency of concrete. Materiales de Construcción, [S. l.], n. 015, p. 44–44, 1950. DOI: 10.3989/mc.1950.i015.3125. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/3125. Acesso em: 2 may. 2024.