Z. E. Fitri, F. P. Yunita, A. M. N. Imron, L. N. Sahenda, and A. M. Raharjo, “Combination of forward chaining and certainty factor methods for the early detection of Acute Respiratory Infections (ARI)”, Eng Appl Sci Res, vol. 50, no. 4, pp. 316–323, Jul. 2023.