Emmanuel, S., Sathasivam, S., Hasmadi, N. H. I., Mohamad Nasir, N. H. and Velavan, M. (2024) “Estimating Upsurge of Hiv Cases in Malaysia by Using Heun’s Predictor-Corrector Method”, Journal of Science and Mathematics Letters, 12(1), pp. 43–52. doi: 10.37134/jsml.vol12.1.6.2024.