Beta, Muhammad Afrizal, Karmila Mokoginta, and Ana Nadiyyah. “Model Matematika SEIPRS Penyebaran Penyakit Pneumonia Dengan Pengaruh Vaksinasi Dan Pengobatan”. Research in the Mathematical and Natural Sciences 1, no. 1 (February 20, 2022): 27–38. Accessed April 5, 2025. https://journal.scimadly.com/index.php/rmns/article/view/6.