1. 2010. LinkedSensorData. Online. (September 2010). http://wiki.knoesis.org/index.php/LinkedSensorData#Linked_Observation_Data
2. 2014. RDF Schema 1.1 W3C Recommendation. Online. (Feb 2014). https://www.w3.org/TR/rdf-schema/
3. 2016. Postgres-XL: Scalable Open Source PostgreSQL-based Database Cluster. Online. (Nov 2016). http://www.postgres-xl.org
4. 2017. LOD Statistics. Online. (March 2017). http://stats.lod2.eu
5. D Abadi, M Adam, S Madden, and K Hollenbach. 2009. SW-Store: a vertically partitioned DBMS for Semantic Web data management. The VLDB Journal-The International Journal on Very Large Data Bases (2009), 385--406.