A. Mahadesyawardani, U. R. Maulidya, B. A. P. Marbun, F. Y. Pratama, and N. Chamidah, “Comparative Analysis of Local Polynomial Regression and ARIMA in Predicting Indonesian Benchmark Coal Price”, Pythagoras, vol. 19, no. 1, pp. 64–76, Nov. 2024.