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Applied Mathematics and Computation > 2012 > 219 > 8 > 3420-3424
Applied Mathematics and Computation > 2008 > 204 > 1 > 162-169
Applied Mathematics and Computation > 2012 > 219 > 8 > 3420-3424
Applied Mathematics and Computation > 2008 > 204 > 1 > 162-169