Myłka, Antoni, Alina Myłka, Bartosz Kryza, and Jacek Kitowski. “Integration of Heterogeneous Data Sources in an Ontological Knowledge Base”. Computing and Informatics 31, no. 1 (June 20, 2012): 189–223. Accessed April 30, 2025. https://www.cai.sk/ojs/index.php/cai/article/view/2089.