ontológia. koncept. inštancia konceptu. rekurzia. objektová vlastnosť. personalizáciaAndrejko, Anton, 1980- Comparing Instances of Ontological Concepts for Personalized Recommendation in Large Information Spaces. -- IF 2008 = 0,492. -- IF 2009 = 0,456. -- 000271135500003. -- 2-s2.0-70349869943. Bieliková, Mária, 1966- In: Computing and Informatics. -- Vol. 28, No. 4 (2009), s.429-452.