Kharis, Muhammad, Miswanto, and Cicik Alfiniyah. 2026. “Optimal Control Problem of Mathematical Model With Fuzzy Parameter for the COVID-19 Epidemic With Symptomatic and Asymptomatic Cases in Indonesia”. Statistics, Optimization & Information Computing 15 (4), 3282-3304. https://doi.org/10.19139/soic-2310-5070-3123.