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Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2009 > 29 > 1 > 19-42
Applicationes Mathematicae > 1993-1995 > 22 > 1 > 11-23
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2009 > 29 > 1 > 19-42
Applicationes Mathematicae > 1993-1995 > 22 > 1 > 11-23