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Open Mathematics > 2012 > 10 > 6 > 2003-2011
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2011 > 31 > 2 > 157-171
Open Mathematics > 2012 > 10 > 6 > 2003-2011
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2011 > 31 > 2 > 157-171