Andriani, Tuti, Risca Sri Mentari, Meiarni Situkkir, and Darmeli Nasution. “Expert System for Diagnosing Gastric Disease Using the Forward Chaining Method”. Instal : Jurnal Komputer 16, no. 02 (June 30, 2024): 110–119. Accessed March 26, 2026. https://journalinstal.cattleyadf.org/index.php/Instal/article/view/226.