1. Corcho O, Fernandez-Lopez M, Gómez-Pérez A, Vicente O (2002) WebODE: An Integrated Workbench for Ontology Representation, Reasoning and Exchange, Proc. of EKAW2002, Springer LNAI 2473: 138–153.
2. Decker S, Erdmann M, Fensel D, Studer R (1999) Ontobroker: Ontology Based Access to Distributed and Semi-structured Information: 351–369.
3. Duineveld A, Weiden M, Kenepa B, Benjamis R (1999) WonderTools? A Comparative Study of Ontological Engineering Tools. Proc. of KAW99.
4. Fernandez-Lopez M, Gómez-Pérez A, Pazos Sierra J (1999) Building a Chemical Ontology Using Methontology and the Ontology Design Environment, IEEE Intelligent Systems, 14(1): 37–46.
5. Fernandez-Lopez M, Gómez-Pérez A, (2002) The Integration of OntoClearn in WebODE, Proc. of the 1st Workshop on Evaluation of Ontology-based Tools (EON2002): 38–52.