Farah Ayu Mufida, Eltivia, N. and Riwajanti, N.I. 2024. Time Series Forecasting of Nickel Sales in Nickel Mining Companies Listed on Indonesia Stock Exchange (IDX). eCo-Fin. 6, 2 (Jun. 2024), 133–142. DOI:https://doi.org/10.32877/ef.v6i2.1110.