A WEB-BASED PLATFORM FOR MANAGEMENT AND VISUALIZATION OF GEOMETRIC DOCUMENTATION PRODUCTS OF CULTURAL HERITAGE SITES - Ioannidis, C.; Tallis, I.; Pastos, I.; Boutsi, A.-M.; Verykokou, S.; Soile, S.; Tokmakidis, P.; Tokmakidis, K. (ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., 2021)