Sugiyanto, and Muchammad Abrori. “Covid-19 Transmission Modeling (Case Study of Jawa Timur Province and Daerah Khusus Ibukota Jakarta Province, Indonesia)”. Proceeding International Conference on Religion, Science and Education, vol. 2, Apr. 2023, pp. 715-9, https://sunankalijaga.org/prosiding/index.php/icrse/article/view/986.