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Applied Mathematics and Computation > 2013 > 225 > Complete > 345-351
Applied Mathematics and Computation > 2011 > 218 > 1 > 124-129
Applied Mathematics Letters > 2011 > 24 > 5 > 777-783
Applied Mathematics and Computation > 2013 > 225 > Complete > 345-351
Applied Mathematics and Computation > 2011 > 218 > 1 > 124-129
Applied Mathematics Letters > 2011 > 24 > 5 > 777-783