“…Fahimnia et al [2] classified the studies into seven clusters according to the SCS complexity. These clusters are given as follows: Cluster 1: single-product models [25][26][27][28]; Cluster 2: multi-product, single-plant models [29][30][31]; Cluster 3: multiple-products, multiple-plants, single-or no-warehouse models [32][33][34]; Cluster 4: multiple-products, multipleplants, multiple-warehouses, single-/no-end-user models [35][36][37]; Cluster 5: multiple-products, multiple-plants, multiple-warehouses, multiple end users, single-transport-path models [20,38,39]; Cluster 6: multiple-products, multipleplants, multiple-warehouses, multiple-end-users, multipletransport-paths, no time period models [40,41]; Cluster 7: multiple-products, multiple-plants, multiple-warehouses, multiple-end-users, multiple-transport-paths, multible-period-models [2]. To the best of the author's knowledge, a new cluster (Cluster 8) can be added to these classifications: Cluster 8: multiple-products, multiple-plants, multiple-warehouses, multiple-end-users, single-transport-path, multiple-periods models [42,43].…”