Yousefikhoshbakht, Majid; Khorram, Esmaile - In: Journal of industrial engineering international 8 (2012), pp. 1-9
; NP-hard problems ; sweep algorithm ; vehicle routing problem …The vehicle routing problem (VRP) is one of the most important combinational optimization problems that has nowadays … received much attention because of its real application in industrial and service problems. The VRP involves routing a fleet of …