Reference Ontology and (ONTO)<sup>2</sup> Agent: The Ontology Yellow Pages.

Julio César Arpírez Vega Asunción Gómez-Pérez Adolfo Lozano Tello Helena Sofia Andrade N. P. Pinto Reference Ontology and (ONTO)<sup>2</sup> Agent: The Ontology Yellow Pages. 387-412 2000 2 Knowl. Inf. Syst. 4 http://dx.doi.org/10.1007/PL00011649 db/journals/kais/kais2.html#VegaGTP00