Corcho, Oscar and García-Castro, Raúl  (2010).  Five Challenges for the Semantic Sensor Web.   "Semantic Web - Interoperability, Usability, Applicability", v. 1  (n. 1-2);   pp. 121-125.  ISSN 1570-0844.   https://doi.org/10.3233/SW-2010-0005 <https://doi.org/10.3233/SW-2010-0005>.