P. Prihandoko, D. Jollyta, G. Gusrianty, M. Siddik, and J. Johan, “Cluster Validity for Optimizing Classification Model: Davies Bouldin Index – Random Forest Algorithm”, MATRIK, vol. 24, no. 1, pp. 61–72, Nov. 2024, doi: 10.30812/matrik.v24i1.4043.