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Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2014 > 34 > 1 > 15-39
Nonlinear Analysis > 2009 > 71 > 1-2 > 186-195
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2014 > 34 > 1 > 15-39
Nonlinear Analysis > 2009 > 71 > 1-2 > 186-195