A robust optimization model for multi-objective multi-period supply chain planning under uncertainty considering quantity discounts / Erfan Rahimi, Mohammad Mahdi paydar, Iraj Mahdavi, Javid Jouzdani, Amir Arabsheybani

A hybrid integer grey programming for an integrated problem of project selection and scheduling with interval data / Homa Amirian, Rashed Sahraeian

Computation and optimization of a working breakdown queue with second optional service/ Dong-Yuh Yang, Yi-Hsuan Chen

Utilizing new approaches to address the fuzzy fixed charge transportation problem / Fatemeh Gholian-Jouybari, Ahmad J.Afhari, Mohammad Mahdi Paydar

A comparative analysis of mixed-integer linear formulations for the multi-family capacitated lot-sizing problem / Andrea L. Arias, Ricardo A. Gatica