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Open Mathematics > 2012 > 10 > 6 > 2077-2087
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2011 > 31 > 2 > 199-229
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2011 > 31 > 1 > 71-90
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2009 > 29 > 1 > 113-126