Simanjuntak, Hendra Feryanto, and Fergyanto Gunawan. 2023. “Forecasting Modelling For Oil Country Tubular Goods (OCTG)”. Jurnal Teknik Industri Terintegrasi (JUTIN) 6 (4):1065-78. https://doi.org/10.31004/jutin.v6i4.19164.