Anggriani, Nita, et al. “Analysis of Vulnerable and Recovered Population Dynamics in the SAHTR Model Based on Variations in the Spread and Rehabilitation Rates”. Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences, vol. 4, no. 3, July 2025, pp. 293-02, doi:10.53696/venn.v4i3.322.