J. Pauluk, M. Duarte, R. Prado, and C. Hara.
" Processing SPARQL Query on an Entity Relational Basis", in <em>Proceedings of the 33rd Brazilian Symposium on Databases</em>, Rio de Janeiro, 2018, pp. 235-240, doi: <a href="https://doi.org/10.5753/sbbd.2018.22236">https://doi.org/10.5753/sbbd.2018.22236</a>.