H. Ubaya, D. Stiawan, B. Y. Suprapto, R. F. Ekaputra, N. Afifah, and S. K. Ningrum, “Optimizing K-Means Clustering Parameters for Mapping Smart Contract Transaction Characteristics: A Comparative Analysis of Evaluation Metrics in the IOTA Ecosystem”, IJEEI, vol. 14, no. 1, pp. 306–324, Mar. 2026, doi: 10.52549/ijeei.v14i1.7741.