Sinaga , B. H. ., and D. D. . Santika. “Covid-19 and Viral Pneumonia Detection from Chest X-Ray Images Using Pretrained Deep Convolutional Neural Networks”. International Journal of Intelligent Systems and Applications in Engineering, vol. 11, no. 3, July 2023, pp. 1106-14, https://ijisae.org/index.php/IJISAE/article/view/3370.