Hutasuhut, D. I. G., Ommi Alfina, Nita Syahputri, Sihotang, S. F., Efani Desi, & Siti Aliyah. (2021). Expert System Detects Boiler Engine Damage Using Certainty Factors. U-NET Jurnal Teknik Informatika, 5(2), 67-75. https://doi.org/10.52332/u-net.v5i2.350