“SEIRS research map COVID-19 vaccines: analysis of trends, findings, and challenges of mathematical models”, Perspect. Math. Appl., vol. 1, no. 02, pp. 34–45, Dec. 2025, Accessed: Feb. 10, 2026. [Online]. Available: https://jurnal.kreasipustaka.com/index.php/permata/article/view/25