Mohammadi, M., Esmaelian, M. and Atighehchian, A. 2020. A PROFIT-MAXIMIZING MODEL FOR INTEGRATED LOT-SIZING AND SCHEDULING PROBLEM WITH MULTI-ITEM SUPPLIER SELECTION AND DEMAND PACKAGES. International Journal of Industrial Engineering: Theory, Applications and Practice. 27, 3 (Dec. 2020). DOI:https://doi.org/10.23055/ijietap.2020.27.3.5815.