“A Quantitative Analysis of Preventive Measures to Mitigate the Infectious Diseases Using SIR Model by Optimal Control Technique”. GUB Journal of Science and Engineering 5, no. 1 (June 28, 2018): 11–19. Accessed June 28, 2026. https://www.banglajol.info/index.php/GUBJSE/article/view/47895.