OntoRama: Browsing RDF Ontologies Using a Hyperbolic-Style Browser. - Peter W. Eklund; Nataliya Roberts; Steve Green (CW, 2002)

Retrieving and Exploring Ontology-based Information. - Peter W. Eklund; Richard J. Cole II; Nataliya Roberts (Handbook on Ontologies, 2004)

RDF-based Peer-to-Peer Based Ontology Editing. - Peter Becker 002; Peter W. Eklund; Nataliya Roberts (J. Digit. Inf. Manag., 2006)