Ahmed El-Sayed, Laila El-Haddad, and Mohamed Ali. “Natural Language Processing Advancements: A Survey of Transformer Models and Beyond”. Journal of Artificial Intelligence Review 2, no. 2 (April 5, 2021): 1–9. Accessed October 10, 2026. https://learnedvertex.com/index.php/JAIR/article/view/95.