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Commentationes Mathematicae > 2009 > 49 > 2
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2004 > 24 > 1 > 13-30
Commentationes Mathematicae > 2009 > 49 > 2
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2004 > 24 > 1 > 13-30