@inproceedings{P113.339, author={Dimou, Anastasia and Vander Sande, Miel and Colpaert, Pieter and Mannens, Erik and Van de Walle, Rik}, title={Extending R2RML to a source-independent mapping language for RDF}, booktitle={International Semantic Web Conference, Proceedings}, year={2013}, pages={237-240}, address={Sydney, Australiƫ}, }