Fernández Ochoa, Carmen, et al. “New Evidences of Early Christianity in Asturias: Christograms of the Roman Villa of Veranes (Gijón)”. Gerión. Revista de Historia Antigua, vol. 31, Dec. 2013, pp. 385-16, https://doi.org/10.5209/rev_GERI.2013.v31.43626.