al- Khulaydi, Abd al-Majid Ahmad Ghalib Ali, Mansur Numan Marhub. "Designing Mathematical Model and Stochastic Hybrid Random Method for a Cache System to Create a Hybrid Cache Algorithm for Web Proxy to Increase the Speed of Accessing and Processing Data: Al- Khulaydi, Abd Al-Majid Ahmad Ghalib Ali, Mansur Numan Marhub". مجلة الأندلس للعلوم التطبيقية, م 17, عدد 8, فبراير، 2023, ص 20, http://andalusuniv.net/journ/index.php/AJAS/article/view/721.