Samat, Nor Azah, and Aznida Che Awang. “The Discrete Time-Space SIR-SI Age-Structured Model for Leptospirosis”. International Journal of Engineering & Technology 7, no. 4.30 (November 30, 2018): 484–487. Accessed May 4, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/22374.