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Open Mathematics > 2016 > 14 > 1 > 723-735
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2012 > 32 > 1 > 45-62
Open Mathematics > 2016 > 14 > 1 > 723-735
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2012 > 32 > 1 > 45-62