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International Journal of Applied and Computational Mathematics > 2017 > 3 > 2 > 347-362
Advances in Difference Equations > 2013 > 2013 > 1 > 1-16
International Journal of Applied and Computational Mathematics > 2017 > 3 > 2 > 347-362
Advances in Difference Equations > 2013 > 2013 > 1 > 1-16