1. Arpírez J, Gómez-Pérez A, Lozano-Tello A, Pinto HS (2000) Reference ontology and (ONTO)2 agent: the ontology yellow pages. Knowl Inf Syst 2:387–412
2. Buitelaar P, Declerck T, Frank A, Racioppa S, Kiesel M, Sintek M, Engel R, Romanelli M, Sonntag D, Loos B, Micelli V, Porzel R, Cimiano P (2006) Linginfo: design and applications of a model for the integration of linguistic information in ontologies. In: Proceedings of the OntoLex 2006 workshop: interfacing ontologies and lexical resources for semantic web technologies, Genoa
3. Buitelaar P, Cimiano P, Haase P, Sintek M (2009) Towards linguistically grounded ontologies. In: Proceedings of the 6th annual European semantic web conference (ESWC2009), Heraklion, pp 111–125
4. Cimiano P, Haase P, Herold M, Mantel M, Buitelaar P (2007) LexOnto: a model for ontology lexicons for ontology-based nlp. In: Proceedings of the OntoLex07 workshop at the ISWC07, Busan
5. d’Aquin M, Haase P, Rudolph S, Euzenat J, Zimmermann A, Dzbor M, Iglesias M, Jacques Y, Caracciolo C, Buil-Aranda C, Gómez-Pérez J (2008) NeOn formalisms for modularization: syntax, semantics, algebra. Technical report D1.1.3, Open University