Evaluating the quality of the relational model and the RDF: a comparative study. - Helena Simões Patrício; Pedro Nogueira Ramos (IADIS AC, 2005)

Formalizing Enrichment Mechanisms for Bibliographic Ontologies in the Semantic Web. - Helena Simões Patrício; Maria Inês Cordeiro; Pedro Nogueira Ramos (MTSR, 2018)

From the web of bibliographic data to the web of bibliographic meaning: structuring, interlinking and validating ontologies on the semantic web. - Helena Simões Patrício; Maria Inês Cordeiro; Pedro Nogueira Ramos (Int. J. Metadata Semant. Ontologies, 2020)