VARAS, M. J.; MOLINA, E.; VICENTE, M. A. Ornamental sandstones used in Ciudad Rodrigo, Salamanca: petrographic and chemical characterization of the quarry materials. Materiales de Construcción, [S. l.], v. 52, n. 266, p. 33–53, 2002. DOI: 10.3989/mc.2002.v52.i266.333. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/333. Acesso em: 29 feb. 2024.