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Open Mathematics > 2012 > 10 > 6 > 2003-2011
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2003 > 23 > 1 > 31-37
Open Mathematics > 2012 > 10 > 6 > 2003-2011
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2003 > 23 > 1 > 31-37