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Logistics and Transport > 2013 > Vol. 18, No. 2 > 17--24
Logistics and Transport > 2013 > Vol. 19, No. 3 > 65--74
Logistics and Transport > 2013 > Vol. 18, No. 2 > 17--24
Logistics and Transport > 2013 > Vol. 19, No. 3 > 65--74