An integrated production policy with defective items and stock-out based substitution under triangular dense fuzzy lock set environmentSnigdha Karmakar, Sujit Kumar De, Tapan Kumar Datta and Adrijit GoswamiRAIRO-Oper. Res., 55 (2021) S2727-S2746DOI: https://doi.org/10.1051/ro/2020102
