Cumbo, Cristina, and Fabio Cumbo. “GMS – Gammadiae Management System: Cataloguing and Interpretation Project of the Socalled Gammadiae Starting from the Iconographic Evidences in the Roman Catacombs”. Conservar Património 31 (April 30, 2019): 145–154. Accessed April 25, 2024. https://conservarpatrimonio.pt/article/view/22044.