EL-ifying ontologies by Carral, D, Feier, C, Grau, B, Hitzler, P, Horrocks, I

Pushing the boundaries of tractable ontology reasoning by Carral, D, Feier, C, Grau, BC, Hitzler, P, Horrocks, I

The combined approach to query answering beyond the OWL 2 profiles. by Feier, C, Carral, D, Stefanoni, G, Grau, B, Horrocks, I

EL−ifying Ontologies by Carral, D, Feier, C, Grau, B, Hitzler, P, Horrocks, I

Guarded hybrid knowledge bases by Heymans, S, de Bruijn, J, Predoiu, L, Feier, C, Van Nieuwenborgh, D

Is your ontology as hard as you think? Rewriting ontologies into simpler DLs by Carral, D, Feier, C, Romero, AA, Grau, BC, Hitzler, P, Horrocks, I