[1]
Putra, M.Z. and Syahra, Y. 2026. Expert System for Diagnosing Rheumatoid Arthritis (RA) in the Elderly Using the Certainty Factor Method. International Journal of Educational Technology Research. 4, 3 (Oct. 2026), 217–226. DOI:https://doi.org/10.59890/ijetr.v4i3.14.