Greeshma K V, Dr. J. Viji Gripsy. “HoG-Based Machine Learning Models for Efficient Classification of COVID-19, Pneumonia, and Normal Chest X Ray Images ”. Journal of Computational Analysis and Applications (JoCAAA) 31, no. 4 (December 1, 2023): 768–774. Accessed February 22, 2025. https://eudoxuspress.com/index.php/pub/article/view/1578.