Rachman, Rizal, Sandra Armayanti, and Toni Kusnandar. “Web-Based Expert System For Respiratory Disorders In Human Using Backward Chaining Method”. Informatics Management, Engineering and Information System Journal 1, no. 1 (July 15, 2023): 35–38. Accessed September 13, 2025. http://jurnal.stmik-mi.ac.id/imeisj/article/view/214.