[See paper R. Agarwal See paper R. Agarwal] [D. Fernandez D. Fernandez] [T. Elsaleh T. Elsaleh] [A. Gyrard A. Gyrard] [J. Lanza J. Lanza] [L. Sanchez L. Sanchez] [N. Georgantas N. Georgantas] [V. Issarny V. Issarny] ["Unified IoT Ontology to Enable Interoperability and Federation of Testbeds" "Unified IoT Ontology to Enable Interoperability and Federation of Testbeds"] [3rd IEEE World Forum on IoT 3rd IEEE World Forum on IoT] [pp. 70-75 pp. 70-75] [Reston Reston] [USA USA] [IEEE IEEE] [HAL HAL]