Alshaykha , Ali Mustafa Ali, Saadi Hamad Thalij, and Orhan Nooruldeen. “Resource Description Framework Query Languages : Comparative Study”. Tikrit Journal of Pure Science 28, no. 5 (October 25, 2023): 193–200. Accessed May 18, 2024. https://tjps.tu.edu.iq/index.php/tjps/article/view/1582.