Machado, Carla, Andreia Machado, Teresa Palomar, Luís Cerqueira Alves, and Márcia Vilarigues. “Debitus Grisailles for Stained-Glass Conservation: An Analytical Study”. Conservar Património 34 (July 31, 2020): 65–72. Accessed July 27, 2024. https://conservarpatrimonio.pt/article/view/21439.