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Journal of Computational and Applied Mathematics > 2009 > 231 > 1 > 200-207
Applied Mathematics and Computation > 2006 > 181 > 2 > 1544-1551
Journal of Computational and Applied Mathematics > 2009 > 231 > 1 > 200-207
Applied Mathematics and Computation > 2006 > 181 > 2 > 1544-1551