Mahadesyawardani, A. et al. 2024. Comparative Analysis of Local Polynomial Regression and ARIMA in Predicting Indonesian Benchmark Coal Price. PYTHAGORAS Jurnal Matematika dan Pendidikan Matematika. 19, 1 (Nov. 2024), 64–76. DOI:https://doi.org/10.21831/pythagoras.v19i1.74889.