Contextual Logic Programming for Ontology Representation and Querying. - Nuno Lopes 002; Cláudio Fernandes; Salvador Abreu (ALPSWS, 2007)

On Querying Ontologies with Contextual Logic Programming. - Cláudio Fernandes; Nuno Lopes 002; Salvador Abreu (OWLED, 2007)

Representing and querying multiple ontologies with Contextual Logic Programming. - Nuno Lopes 002; Cláudio Fernandes; Salvador Abreu (Comput. Sci. Inf. Syst., 2008)