Moustafa, Thanaa, Hossam Refaat, and Mohamed Makhlouf. “Hybrid Deep Learning Model: LSTM and 2BiGRU for Predicting Coronavirus (COVID-19)”. Statistics, Optimization & Information Computing 13, no. 4 (January 30, 2025): 1714-1731. Accessed June 29, 2025. http://47.88.85.238/index.php/soic/article/view/2271.