Frikha, Mohamed, Mohamed Mhiri, and Faiez Gargouri. “A Semantic Social Recommender System Using Ontologies Based Approach For Tunisian Tourism”. ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal 4, no. 1 (October 6, 2015): 90–106. Accessed August 12, 2022. https://revistas.usal.es/index.php/2255-2863/article/view/ADCAIJ20154190106.