@inbook{laera_tamma_bench-capon_semeraro_2004, 
  title={SweetProlog: A System to Integrate Ontologies and Rules}, 
  DOI={10.1007/978-3-540-30504-0_15}, 
  publisher={Springer Berlin Heidelberg}, 
  author={Laera and Tamma and Bench-Capon and Semeraro}, 
  year={2004}
  }