Viegas, D. C., R. Canhão, H. . Riquieri, G. Saavedra, A. Palmela, J. Hermínio, and J. C. Roque. “Influence of the Background, Substrate and Thickness in Light Behaviour and Colour of Zirconia-Reinforced Lithium Silicate (ZLS) Glass-Ceramic”. Brazilian Dental Science, vol. 24, no. 4 Suppl, Dec. 2021, doi:10.4322/bds.2021.e2929.