Ontology Requirements for Digital Product Passports based on the Ecodesign for Sustainable Products RegulationRobal, Tarmo; Maigre, Riina; Haav, Hele-MaiProcedia Computer Science2026 / p. 356-365 https://www.sciencedirect.com/science/article/pii/S1877050926001936 https://doi.org/10.1016/j.procs.2026.02.077