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Acta Mathematica Scientia > 2014 > 34 > 5 > 1571-1583
Journal of Inequalities and Applications > 2014 > 2014 > 1 > 1-16
Acta Mathematica Scientia > 2014 > 34 > 5 > 1571-1583
Journal of Inequalities and Applications > 2014 > 2014 > 1 > 1-16