Fatonah, F., Noviani, E., & Pasaribu, M. (2024). MODELING THE SPREAD OF COVID-19 DISEASE WITH TIME DELAY IN PONTIANAK CITY. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, 18(2), 0903-0914. https://doi.org/10.30598/barekengvol18iss2pp0903-0914