Vrachliotou, M., & Papatheodorou, C. Interoperability of Oral History Metadata: An Ontological Model. https://doi.org/10.1080/00940798.2024.2379367 Maria Vrachliotou Christos PapatheodorouCIDOC CRM EBUCore mapping metadata interoperability ontology-based metadata integration Semantic integration