Quality of Subsumption Hierarchies in Ontologies. - Geir Solskinnsbakk; Jon Atle Gulla; Veronika Haderlein; Per Myrseth; Olga Cerrato (NLDB, 2009)

Semantic Drift in Ontologies. - Jon Atle Gulla; Geir Solskinnsbakk; Per Myrseth; Veronika Haderlein; Olga Cerrato (WEBIST (2), 2010)

Concept Signatures and Semantic Drift. - Jon Atle Gulla; Geir Solskinnsbakk; Per Myrseth; Veronika Haderlein; Olga Cerrato (WEBIST (Selected Papers), 2010)

Quality of hierarchies in ontologies and folksonomies. - Geir Solskinnsbakk; Jon Atle Gulla; Veronika Haderlein; Per Myrseth; Olga Cerrato (Data Knowl. Eng., 2012)