“…Some articles, besides costs, consider the minimization of external costs as well [34][35][36]. Objective functions that were less frequently considered in the literature are the minimization of service duration time [27], profit maximization [37], resource utilization rate maximization [38], demand coverage maximization [39], customer satisfaction maximization [40], risk minimization [41], etc. Articles that consider more than two objective functions are generally less frequent [39,40].…”