Using Protégé-2000 in Reuse Processes. - Helena Sofia Pinto; Duarte Nuno Peralta; Nuno J. Mamede (EON, 2002)

Reusing a Time Ontology. - Duarte Nuno Peralta; Helena Sofia Andrade N. P. Pinto; Nuno J. Mamede (ICEIS (3), 2003)

Combining ontology engineering subprocesses to build a time ontology. - Helena Sofia Pinto; Duarte Nuno Peralta (K-CAP, 2003)