1. Abiteboul, S., Hull, R., Vianu, V.: Foundations of Databases, vol. 8. Addison-Wesley, Reading (1995)
2. Arenas, M., Bertails, A., Prud’hommeaux, E., Sequeda, J.: A direct mapping of relational data to RDF. W3C recommendation, W3C, September 2012
3. Calvanese, D., Fischl, W., Pichler, R., Sallinger, E., Simkus, M.: Capturing relational schemas and functional dependencies in RDFS. In: Twenty-Eighth AAAI Conference on Artificial Intelligence (2014)
4. Cyganiak, R., Wood, D., Lanthaler, M.: RDF 1.1 concepts and abstract syntax. W3C recommendation, W3C, February 2014
5. Das, S., Sundara, S., Cyganiak, R.: R2RML: RDB to RDF mapping language, W3C recommendation, W3C (2012)