Simanjuntak, H. F., and F. . Gunawan. “Forecasting Modelling For Oil Country Tubular Goods (OCTG)”. Jurnal Teknik Industri Terintegrasi (JUTIN), vol. 6, no. 4, Oct. 2023, pp. 1065-78, doi:10.31004/jutin.v6i4.19164.