SINGER, F.; SINGER, S. Progress in porous and hollow ceramics for construotion. Materiales de Construcción, [S. l.], v. 4, n. 054, p. 23–36, 1954. DOI: 10.3989/mc.1954.v04.i054.2597. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2597. Acesso em: 12 may. 2024.