“Stability Analysis AndB Ifurcation for an Bacterial Meningitis S Preadingwith S Tage S Tructure : Mathematical M Odeling”. Iraqi Journal of Science 65, no. 5 (May 30, 2024): 2630–2648. Accessed August 14, 2025. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9328.