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International Journal of Applied Mathematics and Computer Science > 2017 > Vol. 27, no. 1 > 133--155
Transport Problems > 2017 > T. 12, z. 3 > 125--133
LogForum > 2015 > Vol. 11, no. 3 > 267--273
International Journal of Applied Mathematics and Computer Science > 2017 > Vol. 27, no. 1 > 133--155
Transport Problems > 2017 > T. 12, z. 3 > 125--133
LogForum > 2015 > Vol. 11, no. 3 > 267--273