Fitriana, Y., Hasan, N., Tarmino, R., & Giyai, S. (2022). Covid-19 Prognosis Expert System using Forward Chaining Algorithm. Jurnal Bumigora Information Technology (BITe), 4(2), 153-166. https://doi.org/https://doi.org/10.30812/bite.v4i2.2399