Optimization of saving production cost in plastic jute sacks with dynamic programmingRahmi M Sari, Mangara M Tambunan, Khalida Syahputri, Anizar Anizar, Ikhsan Siregar and T Indah RizkyaMATEC Web Conf., 197 (2018) 14008DOI: https://doi.org/10.1051/matecconf/201819714008