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Mathematica Slovaca > 2014 > 64 > 2 > 315-332
Demonstratio Mathematica > 2012 > Vol. 45, nr 4 > 821-833
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 1996 > 16 > 2 > 137-151
Mathematica Slovaca > 2014 > 64 > 2 > 315-332
Demonstratio Mathematica > 2012 > Vol. 45, nr 4 > 821-833
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 1996 > 16 > 2 > 137-151