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Journal of Inequalities and Applications > 2013 > 2013 > 1 > 1-9
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2007 > 27 > 2 > 329-347
Journal of Inequalities and Applications > 2013 > 2013 > 1 > 1-9
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2007 > 27 > 2 > 329-347