Kalim, Nur, and Lukmandono. “Minimizing Material Handling Costs With the SLP Method and Material Transport Equipment in Steel Pipe Companies: Minimalisasi Biaya Material Handling Dengan Metode SLP Dan Material Transport Equipment Pada Perusahaan Pipa Baja”. PROZIMA (Productivity, Optimization and Manufacturing System Engineering), vol. 4, no. 2, Mar. 2021, pp. 10-16, doi:10.21070/prozima.v4i2.1310.