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Transport Problems > 2014 > T. 9, z. 1 > 37--47
Operations Research and Decisions > 2013 > Vol. 23, No. 2 > 67--80
Transport Problems > 2014 > T. 9, z. 1 > 37--47
Operations Research and Decisions > 2013 > Vol. 23, No. 2 > 67--80