Akbar, F., Asyhar, A. H., Lubab, A., Hamid, A., Hafiyusholeh, M., Novitasari, D. C. R., Arifin, A. Z., & Rozi, M. F. (2024). Vaccine Effectiveness Impact on the COVID-19 Dynamics Spread Outbreak Using Improved SEIR Mathematical Epidemic Model. Thai Journal of Mathematics, 22(3), 485–502. Retrieved from https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1504