LabTwinXR: A Real-Time eXtended Reality Digital Twin Testbed for Smart Buildings. - Elissavet Pekridou; Christos Hitiris; Stavros Vasileiou-Kyriakou; Vasiliki Karamerou; Dimitrios J. Vergados; Panagiotis G. Sarigiannidis; Angelos Michalas (ISC2, 2025)