Archaeological Zelliges of Meknes (14th-century): Physical measurements of the colour and identification of colouring agents A. Ben Amara, A. Azzou, M. Haddad, M. Schvoerer, C. Ney, S. Ait Lyazidi et P. Molinié J. Phys. IV France, 123 (2005) 207-211 DOI: 10.1051/jp4:2005123036