@inproceedings{BIBG95,
author={J.~Berm\'{u}dez and A.~Illarramendi and J.M.~Blanco and A.~Go{\~{n}}i},
booktitle={Proc. of the International Workshop on Description Logics. Roma. Italy},
month={June},
title={Metalevel for an efficient query answering},
year={1995},
idbdi={yes},
keywords={DL, Querying Ontologies}
}