Applying user profile ontology for mining web site adaption recommendationsRobal, Tarmo; Kalja, AhtoLocal Procedings of the 11th East-European Conference on Advances in Databases and Information Systems (ADBIS 2007)2007 / p. 126-135 https://www.researchgate.net/publication/221651686_Applying_User_Profile_Ontology_for_Mining_Web_Site_Adaptation_Recommendations