Yasser Abd Djawad, Ridwansyah, Hendra Jaya, Sutarsi Suhaeb, and Suhartono. 2023. “A system model for real-time monitoring and geospatial data for the simulation of surveillance of COVID-19 in Makassar, Indonesia: 10.55131/jphd/2023/210211”. Journal of Public Health and Development 21 (2). Bangkok, Thailand:126-39. https://doi.org/10.55131/jphd/2023/210211.