Sulma, Syamsuddin Toaha, Kasbawati, and Moh Ivan Azis. “Optimal Control of Transmission Dynamics of Meningitis Disease With Vaccination, Campaign, and Treatment Factors”. Journal of Advanced Research in Applied Sciences and Engineering Technology 43, no. 2 (April 9, 2024): 21–31. Accessed November 25, 2024. https://semarakilmu.com.my/journals/index.php/applied_sciences_eng_tech/article/view/4493.