Jusman, Y., Nurkholid, M. A. F., Musthofa, A., Yulianti, W. and Ramadhani, F. (2020) “Expert System for Detecting Cat Skin Disease using Certainty Factor Method”, Journal of Electrical Technology UMY, 4(1), pp. 17–27. doi: 10.18196/jet umy.v4i1.9458.