AL-Zebari, Adel, Shahab Zebari, and Karwan Jacksi. “Football Ontology Construction Using Oriented Programming”. Journal of Applied Science and Technology Trends 1, no. 1 (March 30, 2020): 24-30. Accessed May 3, 2024. https://www.jastt.org/index.php/jasttpath/article/view/13.