A. Vassiliades, A. I. Karageorgiadis, E. Batziou, S. Diplaris, E. A. Stathopoulos, N. Dourvas, K. Ioannidis, S. Vrochidis, I. Kompatsiaris, “Optimizing Carbon Footprint & Energy Performance for the Sustainability of Historic Buildings using Knowledge Graphs & Digital Twins.”, in Proceedings of the 3rd Ιnternational Workshop on Knowledge Graphs for Sustainability (KG4S), Portoroz, Slovenia, June 1-2, 2025.