Alsalem, Z. H., R. Harikrishnakumar, V. Maru, and K. Krishnan. “Optimal Supply Chain Network With Multi-Echelon”. Industrial and Systems Engineering Review, vol. 7, no. 2, Dec. 2019, pp. 102-15, doi:10.37266/ISER.2019v7i2.pp102-115.